{"type":"survey","study_desc":{"title_statement":{"idno":"SEN_1984-2014_INDEPTH-NHDSS_v01_M","title":"Niakhar HDSS INDEPTH Core Dataset 1984 - 2014 (Release 2017)","alt_title":"INDEPTH-NHDSS 1984-2014"},"authoring_entity":[{"name":"Cheikh Sokhna","affiliation":"Institut de Recherche pour le D\u00e9veloppement (IRD)"},{"name":"Laurence Fleury","affiliation":"Institut de Recherche pour le D\u00e9veloppement (IRD)"},{"name":"Val\u00e9rie Delaunay","affiliation":"Institut de Recherche pour le D\u00e9veloppement (IRD)"},{"name":"El-Hadji Konko Cir\u00e9 B\u00e2","affiliation":"Institut de Recherche pour le D\u00e9veloppement (IRD)"}],"oth_id":[{"name":"Paul Senghor","affiliation":"Institut de Recherche pour le D\u00e9veloppemt (IRD)","email":"","role":"Verbal Autopsy Interviewer"},{"name":"Emilie Ndiaye","affiliation":"Institut de Recherche pour le D\u00e9veloppemt (IRD)","email":"","role":"Referencies Manager"},{"name":"Prosper Ndiaye","affiliation":"Institut de Recherche pour le D\u00e9veloppemt (IRD)","email":"","role":"Administrative Manager"},{"name":"Malick Toure","affiliation":"Institut de Recherche pour le D\u00e9veloppemt (IRD)","email":"","role":"Logistics Manager"}],"production_statement":{"producers":[{"name":"Mouhamadou Baba Sow","affiliation":"Institut de Recherche pour le D\u00e9veloppemt (IRD)","role":"Data Manager"},{"name":"Emilie Volpi","affiliation":"Institut de Recherche pour le D\u00e9veloppemt (IRD)","role":"Data Manager"},{"name":"Adiouma Faye","affiliation":"Institut de Recherche pour le D\u00e9veloppemt (IRD)","role":"Data collector"}],"copyright":"This dataset documentation is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. The dataset is shared in terms of the data-use agreement accepted at the time of data download.","funding_agencies":[{"name":"Institut de Recherche pour le D\u00e9veloppemt","abbreviation":"IRD","role":"Current funder"}]},"distribution_statement":{"contact":[{"name":"iSHARE2 Helpdesk","affiliation":"INDEPTH","email":"help-data@indepth-network.org","uri":"http:\/\/indepth-ishare.org\/howtouse"}]},"series_statement":{"series_name":"Demographic Surveillance","series_info":"This dataset contains rounds 1 to 16 of demographic surveillance data covering the period from 1 Jan 2008  to 31 December 2016. \n\nAn initial baseline census was carried out in 1962 for 8 villages, followed by another one in 1983 when the study area of Niakhar was expanded. From 1962 to 1987, data were collected through annual rounds during the dry season. Demographic events were collected by interviewers using a printed list of compound residents with their characteristics. From 1987 to 1997, rounds became weekly because of the need for continuous birth registration for vaccine trials. Annual censuses were carried out to check data collection, particularly relative to in- and out-migration. Routine visits were conducted in the 30 villages of the study area every three months between 1997and 2007 and every four months between 2008 and 2012 and every six month since then. Interviews are conducted with tablet PC since 2007. Verbal autopsies are completed after each round by trained personnel."},"version_statement":{"version":"CMD2014.v1","version_date":"2017-05-20"},"study_info":{"keywords":[{"keyword":"Migration","uri":""},{"keyword":"Mortality","uri":""},{"keyword":"Fertility","uri":""},{"keyword":"Population","uri":""}],"topics":[{"topic":"Demography [N01.224]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Age Distribution [N01.224.033]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Emigration and Immigration [N01.224.625.350]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Residential Mobility [N01.224.791.700]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Sex Distribution [N01.224.803]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Vital Statistics [N01.224.935]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Life Expectancy [N01.224.935.464]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Mortality [N01.224.935.698]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Birth Rate [N01.224.935.849.500]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Rural Population [N01.600.725]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Maternal Age [N06.850.490.250.550]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Parity [N06.850.490.812.600]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"},{"topic":"Survival Analysis [N06.850.520.830.998]","vocab":"MeSH","uri":"http:\/\/www.ncbi.nlm.nih.gov\/mesh"}],"abstract":"The Health and Demographic Surveillance System (HDSS) in Niakhar, a rural area of Senegal, is located 135 km east of Dakar. This HDSS has been set up in 1962 by the Institut de Recherche pour le D\u00e9veloppement (IRD) to face the shortcomings of the civil registration system and provide demographic indicators.\n\nSome 65 villages were followed annually in the Niakhar area from 1962 to 1969. The study zone was reduced to eight villages from 1969 to 1983, and from then on the HDSS was extended to include 22 other villages, covering a total of 30 villages for a population estimated at 45,000 in December 2013. Thus 8 villages have been under demographic surveillance for almost 50 years and 30 villages for 30years.\n\nVital events, migrations, marital changes, pregnancies, immunization are routinely recorded (every four months). The database also includes epidemiological, economic and environmental information coming from specific surveys. Data were collected through annual rounds from 1962 to 1987; rounds became weekly from 1987 to 1997; routine visits were conducted every three months between 1997and 2007 and every four months since then. \n\nThe current objectives are 1) to obtain a long-term assessment of demographic and socio-economic indicators necessary for bio-medical and social sciences research, 2) to keep up epidemiological and environmental monitoring, 3) to provide a research platform for clinical and interdisciplinary research (medical, social and environmental sciences). Research projects during the last 5 years are listed in Table 2. The Niakhar HDSS has institutional affiliation with the Institut de Recherche pour le D\u00e9veloppement (IRD, formerly ORSTOM).","coll_dates":[{"start":"1984-01-01","end":"2014-12-31","cycle":"Release coverage"}],"nation":[{"name":"Senegal","abbreviation":"SEN"}],"geog_coverage":"The study zone of Niakhar is located in Senegal, 14.5\u00baN Latitude and 16.5\u00baW Longitude in the department of Fatick (Sine-Saloum), 135 km east of Dakar. The Niakhar study zone covers 203 square kilometres and is located in the continental Sahelian-Sudanese climatic zone. For thirty years the region has suffered from drought. The average annual rainfall has decreased from 800 mm in the 1950s to 500 mm in the 1980s. Increasing amounts of precipitation have been observed since the mid-2000s with an average annual rainfall of 600 mm between 2005 and 2010. The area is 203 square kilometers.","analysis_unit":"Individual","universe":"Members of households reside within the demographic surveillance area. Inmigrants are defined by intention to become resident, but actual residence episodes of less than 180 days are censored. Outmigrants are defined by intention to become resident elsewhere, but actual periods of non-residence less than 180 days are censored, except seasonal work migrants, worker with a wife resident, pupils or students. Children born to resident women are considered resident by default, irrespective of actual place of birth. The dataset contains the events of all individuals ever resident during the study period (1 Jan 1990 to 31 Dec 2013).\n\nThe Niakhar HDSS collects for each resident the following basic data: individual, household and compound identifying information, mother and father identification, relationship to the head of household and spousal relationship. From 1983 to 2007, the HDSS routinely monitored deaths, pregnancies, births, miscarriages, stillbirths, weaning, migrations, changes of marital status, immunizations, and cases of measles and whooping cough. For the last 5 years, the HDSS only recorded demographic events related to each resident including cause of death. Verbal autopsies have been conducted after all deaths except for those that occurred between 1999 and 2004 where only deaths for people aged 0-55 years were investigated. The Niakhar HDSS also registers visitors as well as all the demographic events related to them in case of in-migration. Household characteristics (living conditions, domestic equipment, etc.) were collected in 1998 and 2003, and community equipment (schools, boreholes, etc.) in 2003. Economic and environmental data will be collected in 2013. Table 3 presents further details on the data items collected. The Niakhar HDSS interviewers collect data with tablet PCs that are loaded with the last updated database linked to a user-friendly interface indicating the household members and the questionnaire. Daily backups are performed on an external hard drive and weekly synchronizations are scheduled during the round, helping to update the database and check data consistency (i.e. residential moves within the study area or marriages). Applications are  Developed in Visual Basic.Net and the database is managed with Microsoft Access.","data_kind":"Event history data","notes":"This study represents only a portion of the total data associated with the complet Niakhar demographic surveillance as described in the study abstract.\n\nIt specifically only includes the events defining the resident exposure of individuals under surveillance as well as the delivery events of resident women. Each type of event contains minimal attributes describing the event:\n\nAttributes common to each event: Event Type, Event Date, Observation Date\n\nMigration: Origin & Destination\n\nDelivery: Live born and Still born counts","study_scope":"This study represents only a portion of the total data associated with the complet Niakhar demographic surveillance as described in the study abstract.\n\nIt specifically only includes the events defining the resident exposure of individuals under surveillance as well as the delivery events of resident women. Each type of event contains minimal attributes describing the event:\n\nAttributes common to each event: Event Type, Event Date, Observation Date\n\nMigration: Origin & Destination\n\nDelivery: Live born and Still born counts"},"method":{"data_collection":{"data_collectors":[{"name":"NIAKHAR for Health and Population Studies","abbreviation":"SN013","affiliation":"Institut de Recherche pour le Developpement (IRD)"}],"frequency":"This dataset contains rounds 1 to 18 of demographic surveillance data covering the period from 1 Jan 1983 to 31 December 2015. \n\nFrom 1983 to 1987, data were collected through annual rounds during the dry season. Demographic events were collected by interviewers using a printed list of compound residents with their characteristics. From 1987 to 1997, rounds became weekly because of the need for continuous birth registration for vaccine trials. Annual censuses were carried out to check data collection, particularly relative to in- and out-migration. Routine visits were conducted in the 30 villages of the study area every three months between 1997and 2007 and every four months between 2008 and 2012 and every six month since then.","sampling_procedure":"This dataset is not based on a sample; it contains information from the complete demographic surveillence area.","sampling_deviation":"None","coll_mode":"Proxy Respondent [proxy]","research_instrument":"List of questionnaires:\n\nCompound  Registration or update Form \nHoushold Registration or update Form \nHousehold Membership Registration or update Form \nExternal Migration Registration Form \nInternal Migration Registration Form \nIndividual Registration Form\nBirth  Registration Form\nDeath Registration Form","coll_situation":"Interviewer were trained immediately prior to the baseline data collection and then refresher training was conducted for one day between each surveillance round.","act_min":"Fiedworkers operated in teams of 4 Fiedworkers and 1 Fiedworkers supervisor who supervises fieldWorkers. they conduct supervised visits and quality control visits and review Fiedworkers data collection.","weight":"Not applicable","cleaning_operations":"On data entry data consistency and plausibility were checked by 455 data validation rules at database level. If data validaton failure was due to a data collection error, the questionnaire was referred back to the field for revisit and correction. If the error was due to data inconsistencies that could not be directly traced to a data collection error, the record was referred to the data quality team under the supervision of the senior database scientist. This could request further field level investigation by a team of trackers or could correct the inconsistency directly at database level.\n\nNo imputations were done on the resulting micro data set, except for:\n\na. If an out-migration (OMG) event is followed by a homestead entry event (ENT) and the gap between OMG event and ENT event is greater than 180 days, the ENT event was changed to an in-migration event (IMG).\nb.  If an out-migration (OMG) event is followed by a homestead entry event (ENT) and the gap between OMG event and ENT event is less than 180 days, the OMG event was changed to an homestead exit event (EXT) and the ENT event date changed to the day following the original OMG event.\nc. If a homestead exit event (EXT) is followed by an in-migration event (IMG) and the gap between the EXT event and the IMG event is greater than 180 days, the EXT event was changed to an out-migration event (OMG).\nd. If a homestead exit event (EXT) is followed by an in-migration event (IMG) and the gap between the EXT event and the IMG event is less than 180 days, the IMG event was changed to an homestead entry event (ENT) with a date equal to the day following the EXT event.\ne. If the last recorded event for an individual is homestead exit (EXT) and this event is more than 180 days prior to the end of the surveillance period, then the EXT event is changed to an out-migration event (OMG)\n\nIn the case of the village that was added (enumerated) in 2006, some individuals may have outmigrated from the original surveillance area and setlled in the the new village prior to the first enumeration. Where the records of such individuals have been linked, and indivdiual can legitmately have and outmigration event (OMG) forllowed by and enumeration event (ENU). In a few cases a homestead exit event (EXT) was followed by an enumeration event in these cases. In these instances the EXT events were changed to an out-migration event (OMG).","method_notes":"The following processing checks are done during the ETL process.\n\n1. If the first event is legal. Like the first event must beenumeration, birth or inmigration.\n2. If the last event is legal. Like the last event must be end of observtion, death or outmigration.\n3. If the transition events are legal.\n    The list of legal transitions:\n    \n    Birth followed by death\n    Birth followed by exit\n    Birth followed by end of observation\n    Birth followed by outmigration\n    \n    Death followed by none\n    \n    Entry followed by death\n    Entry followed by exit\n    Entry followed by end of observation\n    Entry followed by outmigration\n    Enumeration followed by death\n    Enumeration followed by exit\n    Enumeration followed by outmigration\n    \n    Exit followed by entry\n    \n    Inmigration followed by Death\n    Inmigration followed by exit\n    Inmigration followed by end of observation\n    Inmigration followed by outmigration\n    \n    End of observation followed by none\n    \n    Outmigration followed by none\n    Outmigration followed by enumeration\n    Outmigration followed by inmigration\n    \n    The list of illegal transitions:\n    \n    Birth followed by none\n    Birth followed by birth\n    Birth followed by entry\n    Birth followed by enumeration\n    Birth followed by   inmigration\n     \n    Death followed by birth\n    Death followed by death\n    Death followed by entry\n    Death followed by enumeration\n    Death followed by exit\n    Death followed by inmigration\n    Death followed by outmigration\n    Death followed by end of observation\n    \n    Entry followed by none\n    Entry followed by birth\n    Entry followed by entry\n    Entry followed by enumeration\n    Entry followed by inmigration\n    \n    Enumeration followed by none\n    Enumeration followed by birth\n    Enumeration followed by entry\n    Enumeration followed by enumeration\n    Enumeration followed by inmigration\n    \n    Exit followed by birth\n    Exit followed by death\n    Exit followed by exit\n    Exit followed by end of observation\n    Exit followed by outmigration\n    \n    Inmigration followed by none\n    Inmigration followed by birth\n    Inmigration followed by entry\n    Inmigration followed by enumeration\n    Inmigration followed by inmigration\n    \n    End of observation followed by birth\n    End of observation followed by death\n    End of observation followed by entry\n    End of observation followed by enumeration\n    End of observation followed by exit\n    End of observation followed by inmigration\n    End of observation followed by end of observation\n    End of observation followed by outmigration\n    \n    Outmigration followed by birth\n    Outmigration followed by death\n    Outmigration followed by exit\n    Outmigration followed by end of observation\n    Outmigration followed by outmigration\n    \n    List of edited events:\n    \n    Exit followed by none\n    Exit followed by enumeration\n    Exit followed by inmigration\n    \n    Outmigration followed by entry"},"analysis_info":{"response_rate":"On an average the response rate is about 99% over the years for each round","sampling_error_estimates":"Not Applicable","data_appraisal":"CentreId\tMetricTable\tQMetric\tIllegal\tLegal\tTotal\tMetric\tRunDate\t\nSN013\tMicroDataCleaned\tStarts\t\t86883\t\t\t2017-05-19 15:12\t\nSN013\tMicroDataCleaned\tTransitions\t241970\t241970\t0\t2017-05-19 15:12\t\nSN013\tMicroDataCleaned\tEnds\t\t86883\t\t\t2017-05-19 15:12\t\nSN013\tMicroDataCleaned\tSexValues 32\t241938\t241970\t0\t2017-05-19 15:12\t\nSN013\tMicroDataCleaned\tDoBValues\t241970\t\t\t2017-05-19 15:12"}},"data_access":{"dataset_availability":{"original_archive":"IRD: Niakhar (SN013)"},"dataset_use":{"conf_dec":[{"txt":"This data is anonimised and no confidentiality agreement in addition to the general data use agreement is required","required":"yes","form_no":"","uri":""}],"contact":[{"name":"iSHARE2 Heip desk","affiliation":"INDEPTH","email":"help-data@indepth-network.org","uri":"http:\/\/indepth-ishare.org"}],"cit_req":"Any use of this dataset must cite the digital object  identifier(doi) associated with this dataset. using the following from:\n\n\"Niakhar HDSS INDEPTH Core Dataset 1984-2014 (Release 2017). Provided by the INDEPTH Network Data Repository. www.indepth-network.og <http:\/\/www.indepth-network.org>. doi: 10.7796\/INDEPTH.SN013.CMD2014.v1\"","conditions":"This data is made available for licensed access under the following conditions: \n\n1. Data and other material provided by INDEPTH will not be redistributed or sold to other individuals, institutions or organisations without INDEPTH's written agreement. \n\n2. In the case of multi-centre datasets, data originating from a single contributing member centre of the INDEPTH Network may not be analysed or reported on in isolation without the express permission of the member centre concerned.  \n\n3. No attempt will be made to re-identify respondents, and there will be no use of the identity of any person or establishment discovered inadvertently. Any such discovery will be reported immediately to INDEPTH. \n\n4. No attempt will be made to produce links between datasets provided by INDEPTH or between INDEPTH data and other datasets that could identify individuals. \n\n5. Any books, articles, conference papers, theses, dissertations, reports or other publications employing data obtained from INDEPTH will cite the source, in line with the citation requirement provided with the dataset. \n\n6. An electronic copy of all publications based on the requested data will be sent to INDEPTH. \n\n7. The original collector of the data, INDEPTH, and the relevant funding agencies bear no responsibility for the data's use or interpretation or inferences based upon it.","disclaimer":"The user of the data acknowledges that the orriginal collector of thr data, INDEPTH, and the relevant funding agencies bear no responsibility for the  data's use or interpretation or inferences base upon it."}}},"data_files":[{"file_id":"F1","file_name":"SN013.CMD2014.v1","description":"Event History Micro Data Set of Niakhar HDSS","case_count":"0","var_count":"14","producer":null,"data_checks":null,"missing_data":null,"version":null,"notes":null}],"variables":[{"vid":"V1","name":"RecNr","file_id":"F1","var_dcml":"0","var_intrvl":"contin","var_start_pos":"1","var_end_pos":"6","var_width":"6","var_rec_seg_no":"1","labl":"RecNr","var_val_range":[{"units":"REAL","min":"1","max":"244965"}],"var_sumstat":[{"value":"0","type":"vald"},{"value":"0","type":"invd"}],"var_txt":"A sequetial number uniquely identifying each record in the data file","var_format":"numeric","var_format_schema":"other","fid":"F1"},{"vid":"V2","name":"CountryId","file_id":"F1","var_dcml":"0","var_intrvl":"discrete","var_start_pos":"7","var_end_pos":"9","var_width":"3","var_rec_seg_no":"1","labl":"CountryId","var_val_range":[{"units":"REAL","min":"686","max":"686"}],"var_sumstat":[{"value":"0","type":"vald"},{"value":"0","type":"invd"}],"var_txt":"ISO 3166-1 numeric code f the country in which the surveillance site is situated","var_format":"numeric","var_format_schema":"other","fid":"F1"},{"vid":"V3","name":"CentreId","file_id":"F1","var_intrvl":"discrete","var_start_pos":"10","var_end_pos":"14","var_width":"5","var_rec_seg_no":"1","labl":"CentreId","var_sumstat":[{"value":"0","type":"vald"},{"value":"0","type":"invd"}],"var_txt":"An identifier issued by INDEPTH to each member centre of the format CCCSS, where CCC is a sequential centre identifier and SSS is a sequential identifier of the site within the centre in the case of multiple site centre","var_format":"character","var_format_schema":"other","fid":"F1"},{"vid":"V4","name":"IndividualId","file_id":"F1","var_dcml":"0","var_intrvl":"contin","var_start_pos":"15","var_end_pos":"19","var_width":"5","var_rec_seg_no":"1","labl":"IndividualId","var_val_range":[{"units":"REAL","min":"1","max":"81696"}],"var_sumstat":[{"value":"0","type":"vald"},{"value":"0","type":"invd"}],"var_txt":"a number uniquely indentifying all the record belonging to a specific individual in the data file. This number is not be the same as the identifier used a contributing centre to identifiy the individual.","var_format":"numeric","var_format_schema":"other","fid":"F1"},{"vid":"V5","name":"Sex","file_id":"F1","var_dcml":"0","var_intrvl":"discrete","var_start_pos":"20","var_end_pos":"20","var_width":"1","var_rec_seg_no":"1","labl":"Sex","var_val_range":[{"units":"REAL","min":"0","max":"2"}],"var_sumstat":[{"value":"0","type":"vald"},{"value":"0","type":"invd"}],"var_txt":"Sex of the individual.","var_catgry":[{"value":"0","labl":"Unknown","stats":null,"type":null},{"value":"1","labl":"Male","stats":null,"type":null},{"value":"2","labl":"Female","stats":null,"type":null}],"var_format":"numeric","var_format_schema":"other","fid":"F1"},{"vid":"V6","name":"DoB","file_id":"F1","var_intrvl":"discrete","var_start_pos":"21","var_end_pos":"30","var_width":"10","var_rec_seg_no":"1","labl":"DoB","var_sumstat":[{"value":"0","type":"vald"}],"var_txt":"Tte date of birth of the individual. Format: YYYY\/MM\/DD.","var_format":"character","var_format_name":"Nesstar.date","var_format_schema":"other","var_format_category":"date","fid":"F1"},{"vid":"V7","name":"EventCount","file_id":"F1","var_dcml":"0","var_intrvl":"discrete","var_start_pos":"31","var_end_pos":"32","var_width":"2","var_rec_seg_no":"1","labl":"EventCount","var_val_range":[{"units":"REAL","min":"2","max":"20"}],"var_sumstat":[{"value":"0","type":"vald"},{"value":"0","type":"invd"}],"var_txt":"The Total number of events associated this this individual in this data Set.","var_format":"numeric","var_format_schema":"other","fid":"F1"},{"vid":"V8","name":"EventNr","file_id":"F1","var_dcml":"0","var_intrvl":"discrete","var_start_pos":"33","var_end_pos":"34","var_width":"2","var_rec_seg_no":"1","labl":"EventNr","var_val_range":[{"units":"REAL","min":"1","max":"20"}],"var_sumstat":[{"value":"0","type":"vald"},{"value":"0","type":"invd"}],"var_txt":"A number increasing from 1 to EventCount for each event record in order of event occurence.","var_format":"numeric","var_format_schema":"other","fid":"F1"},{"vid":"V9","name":"EventCode","file_id":"F1","var_intrvl":"discrete","var_start_pos":"35","var_end_pos":"37","var_width":"3","var_rec_seg_no":"1","labl":"EventCode","var_sumstat":[{"value":"0","type":"vald"},{"value":"0","type":"invd"}],"var_txt":"A code identifying the type of event that has occurred.","var_catgry":[{"value":"BTH","labl":"Birth","stats":null,"type":null},{"value":"DLV","labl":"Delivery","stats":null,"type":null},{"value":"DTH","labl":"Death","stats":null,"type":null},{"value":"ENT","labl":"Entry","stats":null,"type":null},{"value":"ENU","labl":"Enumeration","stats":null,"type":null},{"value":"EXT","labl":"Exit","stats":null,"type":null},{"value":"IMG","labl":"In-Migration","stats":null,"type":null},{"value":"OBE","labl":"Observation End","stats":null,"type":null},{"value":"OBL","labl":"Last Observation","stats":null,"type":null},{"value":"OBS","labl":"Observation","stats":null,"type":null},{"value":"OMG","labl":"Out-Migration","stats":null,"type":null}],"var_format":"character","var_format_schema":"other","fid":"F1"},{"vid":"V10","name":"EventDate","file_id":"F1","var_intrvl":"discrete","var_start_pos":"38","var_end_pos":"47","var_width":"10","var_rec_seg_no":"1","labl":"EventDate","var_sumstat":[{"value":"0","type":"vald"}],"var_txt":"The date on which the event occurred. Format: YYYY\/MM\/DD","var_format":"character","var_format_name":"Nesstar.date","var_format_schema":"other","var_format_category":"date","fid":"F1"},{"vid":"V11","name":"ObservationDate","file_id":"F1","var_intrvl":"discrete","var_start_pos":"48","var_end_pos":"57","var_width":"10","var_rec_seg_no":"1","labl":"ObservationDate","var_sumstat":[{"value":"0","type":"vald"}],"var_txt":"Date on which the event was obereved (recorded), also known as surveillance visit date. Format: YYYY\/MM\/DD","var_format":"character","var_format_name":"Nesstar.date","var_format_schema":"other","var_format_category":"date","fid":"F1"},{"vid":"V12","name":"LocationId","file_id":"F1","var_dcml":"0","var_intrvl":"contin","var_start_pos":"58","var_end_pos":"61","var_width":"4","var_rec_seg_no":"1","labl":"LocationId","var_val_range":[{"units":"REAL","min":"1","max":"7449"}],"var_sumstat":[{"value":"0","type":"vald"},{"value":"0","type":"invd"}],"var_txt":"Unique identifier associated with a residential unit within the site and is the location where the individual was or became resident when the event occurred. This identifier is not the same as the identifier use internally by the contributing centre.","var_format":"numeric","var_format_schema":"other","fid":"F1"},{"vid":"V13","name":"MotherId","file_id":"F1","var_dcml":"0","var_intrvl":"contin","var_start_pos":"62","var_end_pos":"66","var_width":"5","var_rec_seg_no":"1","labl":"MotherId","var_val_range":[{"units":"REAL","min":"9","max":"81688"}],"var_sumstat":[{"value":"0","type":"vald"},{"value":"0","type":"invd"}],"var_txt":"The IndividualId of the Mother. Only Provided for Birth events.","var_format":"numeric","var_format_schema":"other","fid":"F1"},{"vid":"V14","name":"DeliveryId","file_id":"F1","var_dcml":"0","var_intrvl":"contin","var_start_pos":"67","var_end_pos":"71","var_width":"5","var_rec_seg_no":"1","labl":"DeliveryId","var_val_range":[{"units":"REAL","min":"1","max":"49521"}],"var_sumstat":[{"value":"0","type":"vald"},{"value":"0","type":"invd"}],"var_txt":"The RecNr of the delivery event associated with this birth.","var_format":"numeric","var_format_schema":"other","fid":"F1"}],"variable_groups":[]}