| Table of contents | TABLES AND FIGURES ........................................................................................................................... ix FOREWORD ............................................................................................................................................. xix
 2018 NIGERIA DEMOGRAPHIC AND HEALTH SURVEY STEERING COMMITTEE .............. xxi
 CONTRIBUTORS TO THE REPORT ................................................................................................ xxiii
 READING AND UNDERSTANDING TABLES FROM THE 2018 NIGERIA DHS ........................ xxv
 ACRONYMS AND ABBREVIATIONS ............................................................................................. xxxiii
 SUSTAINABLE DEVELOPMENT GOAL INDICATORS ............................................................. xxxvii
 MAP OF NIGERIA ............................................................................................................................ xxxviii
 
 1 INTRODUCTION AND SURVEY METHODOLOGY .............................................................. 1
 1.1 Survey Objectives ................................................................................................................ 1
 1.2 Sample Design ..................................................................................................................... 1
 1.3 Questionnaires ..................................................................................................................... 3
 1.4 Anthropometry, Anaemia Testing, Malaria Testing, and Sickle Cell Anaemia Testing ..... 4
 1.5 Pretest .................................................................................................................................. 6
 1.6 Training of Field Staff ......................................................................................................... 6
 1.7 Fieldwork ............................................................................................................................. 7
 1.8 Data Processing ................................................................................................................... 8
 1.9 Response Rates .................................................................................................................... 8
 
 2 HOUSING CHARACTERISTICS AND HOUSEHOLD POPULATION .............................. 11
 2.1 Drinking Water Sources and Treatment ............................................................................ 11
 2.2 Sanitation ........................................................................................................................... 13
 2.3 Exposure to Smoke inside the Home ................................................................................. 15
 2.4 Household Wealth ............................................................................................................. 15
 2.5 Handwashing ..................................................................................................................... 16
 2.6 Household Population and Composition ........................................................................... 16
 2.7 Children’s Living Arrangements and Parental Survival .................................................... 17
 2.8 Birth Registration .............................................................................................................. 17
 2.9 Education ........................................................................................................................... 18
 2.9.1 Educational Attainment ....................................................................................... 18
 2.9.2 School Attendance ............................................................................................... 19
 
 3 CHARACTERISTICS OF RESPONDENTS ............................................................................. 43
 3.1 Basic Characteristics of Survey Respondents .................................................................... 43
 3.2 Education and Literacy ...................................................................................................... 44
 3.3 Mass Media Exposure ....................................................................................................... 45
 3.4 Internet Usage .................................................................................................................... 46
 3.5 Employment ...................................................................................................................... 46
 3.6 Occupation ......................................................................................................................... 47
 3.7 Health Insurance Coverage ................................................................................................ 48
 3.8 Tobacco Use ...................................................................................................................... 49
 
 4 MARRIAGE AND SEXUAL ACTIVITY .................................................................................. 79
 4.1 Marital Status ..................................................................................................................... 79
 4.2 Polygyny ............................................................................................................................ 80
 4.3 Age at First Marriage ......................................................................................................... 81
 4.4 Age at First Sexual Intercourse ......................................................................................... 81
 4.5 Recent Sexual Activity ...................................................................................................... 82
 
 5 FERTILITY ................................................................................................................................... 97
 5.1 Current Fertility ................................................................................................................. 97
 5.2 Children Ever Born and Living ......................................................................................... 99
 5.3 Birth Intervals .................................................................................................................... 99
 5.4 Insusceptibility to Pregnancy ........................................................................................... 100
 5.5 Age at First Birth ............................................................................................................. 101
 5.6 Teenage Childbearing ...................................................................................................... 102
 
 6 FERTILITY PREFERENCES ................................................................................................... 117
 6.1 Desire for Another Child ................................................................................................. 117
 6.2 Ideal Family Size ............................................................................................................. 118
 6.3 Fertility Planning Status .................................................................................................. 119
 6.4 Wanted Fertility Rates ..................................................................................................... 120
 
 7 FAMILY PLANNING ................................................................................................................ 129
 7.1 Contraceptive Knowledge and Use ................................................................................. 130
 7.2 Source of Modern Contraceptive Methods ...................................................................... 132
 7.3 Informed Choice .............................................................................................................. 132
 7.4 Discontinuation of Contraceptives .................................................................................. 133
 7.5 Demand for Family Planning .......................................................................................... 133
 7.6 Contact of Nonusers with Family Planning Providers ..................................................... 136
 
 8 INFANT AND CHILD MORTALITY ...................................................................................... 163
 8.1 Infant and Child Mortality ............................................................................................... 164
 8.2 Biodemographic Risk Factors ......................................................................................... 165
 8.3 Perinatal Mortality ........................................................................................................... 166
 8.4 High-risk Fertility Behaviour .......................................................................................... 167
 
 9 MATERNAL HEALTH CARE ................................................................................................. 173
 9.1 Antenatal Care Coverage and Content ............................................................................ 174
 9.1.1 Skilled Providers ................................................................................................ 174
 9.1.2 Timing and Number of ANC Visits ................................................................... 174
 9.2 Components of ANC Visits ............................................................................................. 175
 9.3 Protection against Neonatal Tetanus ............................................................................... 175
 9.4 Delivery Services ............................................................................................................. 176
 9.4.1 Institutional Deliveries ....................................................................................... 176
 9.4.2 Skilled Assistance during Delivery .................................................................... 177
 9.4.3 Delivery by Caesarean ....................................................................................... 178
 9.4.4 Referral to Place of Delivery ............................................................................. 179
 9.4.5 Reasons for Referral and Time Taken ............................................................... 180
 9.4.6 Means of Transportation to Health Facility ....................................................... 180
 9.4.7 Thermal Care for Newborns .............................................................................. 180
 9.4.8 Cord Care ........................................................................................................... 180
 9.5 Postnatal Care .................................................................................................................. 181
 9.5.1 Postnatal Health Check for Mothers .................................................................. 181
 9.5.2 Postnatal Health Check for Newborns ............................................................... 182
 9.6 Problems in Accessing Health Care ................................................................................ 182
 9.7 Fistula .............................................................................................................................. 183
 
 10 CHILD HEALTH ........................................................................................................................ 223
 10.1 Birth Weight .................................................................................................................... 223
 10.2 Vaccination of Children................................................................................................... 224
 10.3 Symptoms of Acute Respiratory Infection ...................................................................... 227
 10.4 Fever ................................................................................................................................ 228
 10.5 Diarrhoeal Disease ........................................................................................................... 228
 10.5.1 Prevalence of Diarrhoea and Treatment-seeking Behaviour .............................. 228
 10.5.2 Feeding Practices ............................................................................................... 229
 10.5.3 Oral Rehydration Therapy and Other Treatments .............................................. 229
 10.5.4 Knowledge of ORS Packets ............................................................................... 230
 10.6 Treatment of Childhood Illness ....................................................................................... 231
 10.7 Disposal of Children’s Stools .......................................................................................... 231
 
 11 NUTRITION OF CHILDREN AND WOMEN ........................................................................ 255
 11.1 Nutritional Status of Children .......................................................................................... 255
 11.1.1 Anthropometry Training and Data Collection ................................................... 257
 11.1.2 Levels of Child Malnutrition ............................................................................. 257
 11.2 Infant and Young Child Feeding Practices ...................................................................... 259
 11.2.1 Early Initiation of Breastfeeding ........................................................................ 259
 11.2.2 Exclusive Breastfeeding and Continued Breastfeeding ..................................... 260
 11.2.3 Median Duration of Breastfeeding ..................................................................... 260
 11.2.4 Bottle Feeding .................................................................................................... 261
 11.2.5 Introduction of Complementary Foods .............................................................. 261
 11.2.6 Minimum Dietary Diversity, Minimum Meal Frequency, and Minimum Acceptable Diet .... 262
 11.3 Anaemia Prevalence in Children ..................................................................................... 263
 11.4 Prevalence of Sickle Cell Trait and Disease in Children ................................................. 265
 11.5 Presence of Iodised Salt in Households ........................................................................... 265
 11.6 Micronutrient Intake and Supplementation among Children........................................... 266
 11.7 Women’s Nutritional Status ............................................................................................ 266
 11.8 Anaemia Prevalence in Women ...................................................................................... 268
 11.9 Micronutrient Supplementation and Deworming during Pregnancy ............................... 268
 11.10 Minimum Dietary Diversity for Women ......................................................................... 269
 
 12 MALARIA ................................................................................................................................... 297
 12.1 Ownership of Insecticide-treated Nets ............................................................................. 298
 12.2 Household Access to and Use of ITNs ............................................................................ 300
 12.3 Use of ITNs by Children and Pregnant Women .............................................................. 301
 12.4 Reasons for Not Using the Net the Night Preceding the Interview ................................. 302
 12.5 Malaria in Pregnancy ....................................................................................................... 302
 12.6 Case Management of Malaria in Children ....................................................................... 303
 12.7 Prevalence of Low Haemoglobin in Children ................................................................. 304
 12.8 Prevalence of Malaria in Children ................................................................................... 305
 12.9 Beliefs about the Effectiveness of Malaria Behaviours and Products and about Malaria Consequences .... 307
 
 13 HIV/AIDS-RELATED KNOWLEDGE, ATTITUDES, AND BEHAVIOUR ....................... 343
 13.1 HIV/AIDS Knowledge, Transmission, and Prevention Methods .................................... 344
 13.2 Knowledge about Mother-to-Child Transmission ........................................................... 346
 13.3 Discriminatory Attitudes towards People Living with HIV ............................................ 347
 13.4 Multiple Sexual Partners ................................................................................................. 347
 13.5 Paid Sex ........................................................................................................................... 348
 13.6 Male Circumcision .......................................................................................................... 348
 13.7 Self-reporting of Sexually Transmitted Infections .......................................................... 349
 13.8 HIV/AIDS-related Knowledge and Behaviour among Young People ............................ 349
 13.8.1 Comprehensive Knowledge ............................................................................... 349
 13.8.2 First Sex ............................................................................................................. 350
 13.8.3 Premarital Sex .................................................................................................... 350
 13.8.4 Multiple Sexual Partners .................................................................................... 350
 
 14 ADULT AND MATERNAL MORTALITY ............................................................................. 371
 14.1 Data ................................................................................................................................. 371
 14.2 Direct Estimates of Adult Mortality ................................................................................ 372
 14.3 Trends in Adult Mortality ................................................................................................ 373
 14.4 Direct Estimates of Maternal Mortality ........................................................................... 373
 14.5 Trends in Pregnancy-Related Mortality ........................................................................... 374
 
 15 WOMEN’S EMPOWERMENT ................................................................................................ 379
 15.1 Married Women’s and Men’s Employment .................................................................... 380
 15.2 Control over Women’s Earnings ..................................................................................... 381
 15.3 Control over Men’s Earnings .......................................................................................... 381
 15.4 Women’s Control over Their Own Earnings and over Those of Their Husbands ........... 382
 15.5 Women’s and Men’s Ownership of Assets ..................................................................... 382
 15.6 Possession of Title or Deed for a House or Land ............................................................ 383
 15.7 Ownership and Use of Bank Accounts and Mobile Phones ............................................ 383
 15.8 Women’s Participation in Decision Making .................................................................... 383
 15.9 Attitudes toward Wife Beating ........................................................................................ 385
 15.10 Negotiating Sexual Relations .......................................................................................... 386
 15.11 Women’s Empowerment and Demographic and Health Outcomes ............................... 386
 
 16 DOMESTIC VIOLENCE ........................................................................................................... 427
 16.1 Measurement of Violence ................................................................................................ 428
 16.2 Women’s Experience of Physical Violence..................................................................... 429
 16.2.1 Perpetrators of Physical Violence ...................................................................... 430
 16.3 Experience of Sexual Violence ........................................................................................ 430
 16.3.1 Prevalence of Sexual Violence .......................................................................... 430
 16.3.2 Perpetrators of Sexual Violence ......................................................................... 430
 16.4 Experience of Different Forms of Violence .................................................................... 430
 16.5 Marital Control by Husband ............................................................................................ 431
 16.6 Forms of Spousal Violence .............................................................................................. 431
 16.6.1 Prevalence of Spousal Violence ......................................................................... 431
 16.6.2 Onset of Spousal Violence ................................................................................. 434
 16.7 Injuries to Women due to Spousal Violence ................................................................... 434
 16.8 Violence Initiated by Women against Husbands ............................................................. 435
 16.9 Help Seeking among Women Who Have Experienced Violence .................................... 435
 
 17 DISABILITY ............................................................................................................................... 457
 17.1 Disability by Domain and Age ........................................................................................ 457
 17.2 Disability among Adults by Other Background Characteristics ...................................... 458
 
 18 FEMALE GENITAL MUTILATION ....................................................................................... 465
 18.1 Respondents’ Knowledge of Female Genital Mutilation................................................. 465
 18.2 Prevalence of Female Genital Mutilation ........................................................................ 466
 18.2.1 Prevalence and Type of Circumcision ............................................................... 466
 18.2.2 Unclassified Types of Female Circumcision ..................................................... 467
 18.2.3 Age at Circumcision .......................................................................................... 468
 18.3 Circumcision of Daughters .............................................................................................. 468
 18.4 Person Who Performed the Circumcision ....................................................................... 469
 18.5 Attitudes towards Female Circumcision .......................................................................... 469
 
 REFERENCES.......................................................................................................................................... 485
 APPENDIX A SAMPLE DESIGN ......................................................................................................... 489
 A.1 Introduction ..................................................................................................................... 489
 A.2 Sample Frame .................................................................................................................. 489
 A.3 Sample Design and Implementation ................................................................................ 491
 A.4 Sample Probabilities and Sampling Weights ................................................................... 496
 
 APPENDIX B ESTIMATES OF SAMPLING ERRORS .................................................................... 497
 APPENDIX C DATA QUALITY TABLES .......................................................................................... 547
 APPENDIX D PERSONS INVOLVED IN THE 2018 NIGERIA DEMOGRAPHIC AND HEALTH
 SURVEY ...................................................................................................................................... 557
 APPENDIX E QUESTIONNAIRES ...................................................................................................... 563
 Household Questionnaire .............................................................................................................. 565
 Woman’s Questionnaire ................................................................................................................ 583
 Man’s Questionnaire ..................................................................................................................... 663
 Biomarker Questionnaire .............................................................................................................. 689
 Fieldworker Questionnaire ............................................................................................................ 705
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