Survey ID Number
RUS_2009_ES_v01_M_WB
Title
Enterprise Survey 2009
Sampling Procedure
The sample for Russian Federation was selected using stratified random sampling. Three levels of stratification were used in this country: industry, establishment size, and oblast (region).
Industry stratification was designed in the way that follows. The universe was stratified into: 1) Manufacturing sectors "15", "18", "24", "27-28", "29", and "Other Manufacturing"; 2) Services sectors "52" and "Other Services."
Sector 15 had a target of 179 interviews, Sector 18 had a target of 164 interviews, Sector 24 had a target of 162 interviews, Sector 27-28 had a target of 164 interviews, Sector 29 had a target of 167 interviews, Sector 52 had a target of 144 interviews, Other Manufacturing had a target of 141 interviews and Other Services had a target of 139 interviews.
Size stratification was defined following the standardized definition for the rollout: small (5 to 19 employees), medium (20 to 99 employees), and large (more than 99 employees). For stratification purposes, the number of employees was defined on the basis of reported permanent full-time workers. This seems to be an appropriate definition of the labor force since seasonal/casual/part-time employment is not a common practice, except in the sectors of construction and agriculture.
Regional stratification was defined in seven regions. These regions are North West, Central, South, Ural, Siberia, Volgo-Viatsky, and Far East.
Given the stratified design, sample frames containing a complete and updated list of establishments for the selected regions were required. Great efforts were made to obtain the best source for these listings. However, the quality of the sample frames was not optimal and, therefore, some adjustments were needed to correct for the presence of ineligible units. These adjustments are reflected in the weights computation.
For most countries covered in BEEPS IV two sample frames were used. The first frame for Russia was compiled in 2007 and obtained from the National Statistics Agency [GosKomStat]. The frame did not show the number of employees for establishments. It did however, show turnover values. Estimates were obtained which related turnover to size. They suggested that to qualify for the usual size criterion the turnover should be at least 1 million roubles. In addition, as Russia is a very large country spanning eleven time zones, the frame would cover many cities. Therefore, for cost efficiency reasons, it was decided that an extract should be purchased that covered only an agreed set of cities for establishments with turnover in excess of 1 million roubles. That extract, selected to instructions of the TNS statistical team, was sent to the TNS statistical team in London to select the establishments for interview.
The second frame, supplied by the World Bank/EBRD, consisted of enterprises interviewed in BEEPS 2005. The clients required that the attempts should be made to re-interview establishments responding to the BEEPS 2005 survey where they were within the selected geographical regions and met eligibility criteria. That sample is referred to as the Panel.
The quality of the frame was assessed at the onset of the project. The frame proved to be useful though it showed positive rates of non-eligibility, repetition, non-existent units, etc. These problems are typical of establishment surveys, but given the impact these inaccuracies may have on the results, adjustments were needed when computing the appropriate weights for individual observations. The percentage of confirmed non-eligible units as a proportion of the total number of contacts to complete the survey was 44% (2468 out of 5559 establishments).