The survey was conducted in Montenegro between January and July 2019 as joint project of the European Bank for Reconstruction and Development (EBRD), the European Investment Bank (EIB) and the World Bank Group (WBG). Data from 332 establishments was analyzed.
The objective of the Enterprise Survey is to gain an understanding of what firms experience in the private sector. As part of its strategic goal of building a climate for investment, job creation, and sustainable growth, the World Bank has promoted improving the business environment as a key strategy for development, which has led to a systematic effort in collecting enterprise data across countries. The Enterprise Surveys (ES) are an ongoing World Bank project in collecting both objective data based on firms’ experiences and enterprises’ perception of the environment in which they operate.
Kind of data
Sample survey data [ssd]
Version 01. Edited, anonymous dataset for public distribution.
Regional stratification for the Montenegro ES was done across three regions: North Montenegro comprising Bijelo Polje, Mojkovac, Pljevlja, Plužine, Šavnik, Žabljak; Center and South Montenegro comprising Andrijevica, Berane, Cetinje, Danilovgrad, Gusinje, Kolašin, Nikšić, Petnjica, Plav, Podgorica, Rožaje; and Coastal Montenegro comprising Bar, Budva, Herceg Novi, Kotor, Tivat, Ulcinj.
Unit of analysis
The primary sampling unit of the study is the establishment. An establishment is a physical location where business is carried out and where industrial operations take place or services are provided. A firm may be composed of one or more establishments. For example, a brewery may have several bottling plants and several establishments for distribution. For the purposes of this survey an establishment must make its own financial decisions and have its own financial statements separate from those of the firm. An establishment must also have its own management and control over its payroll.
The whole population, or universe of the study, is the non-agricultural economy. It comprises: all manufacturing sectors according to the group classification of ISIC Revision 3.1: (group D), construction sector (group F), services sector (groups G and H), and transport, storage, and communications sector (group I). Note that this definition excludes the following sectors: financial intermediation (group J), real estate and renting activities (group K, except sub- sector 72, IT, which was added to the population under study), and all public or utilities-sectors.
Producers and sponsors
World Bank Group (WBG)
European Bank for Reconstruction and Development (EBRD)
European Investment Bank (EIB)
World Bank Group
European Bank for Reconstruction and Development
European Investment Bank
The sample for 2019 Montenegro ES was selected using stratified random sampling.
Three levels of stratification were used in this country: industry, establishment size, and region.
Industry stratification was done as follows: Manufacturing – combining all the relevant activities (ISIC Rev. 4.0 codes 10-33), Retail (ISIC 47), and Other Services (ISIC 41-43, 45, 46, 49-53, 55, 56, 58, 61, 62, 79, 95).
As it is standard for the ES, the Montenegro ES was based on the following size stratification: small (5 to 19 employees), medium (20 to 99 employees), and large (100 or more employees).
Regional stratification for the Montenegro ES was done across three regions: North Montenegro comprising Bijelo Polje, Mojkovac, Pljevlja, Plužine, Šavnik, Žabljak; Center and South Montenegro comprising Andrijevica, Berane, Cetinje, Danilovgrad, Gusinje, Kolašin, Nikšić, Petnjica, Plav, Podgorica, Rožaje; and Coastal Montenegro comprising Bar, Budva, Herceg Novi, Kotor, Tivat, Ulcinj. For the purposes of achieving representative samples, the ES indicators are calculated with all the regions combined.
Note: Refer to Sampling Structure section in “The Montenegro 2019 Enterprise Surveys Data Set” document for further details on sampling.
Survey non-response must be differentiated from item non-response. The former refers to refusals to participate in the survey altogether whereas the latter refers to the refusals to answer some specific questions. Enterprise Surveys suffer from both problems and different strategies were used to address these issues.
Item non-response was addressed by two strategies:
a- For sensitive questions that may generate negative reactions from the respondent, such as corruption or tax evasion, enumerators were instructed to collect the refusal to respond (-8) as a different option from don’t know (-9).
b- Establishments with incomplete information were re-contacted in order to complete this information, whenever necessary. However, there were clear cases of low response. The following graph shows non-response rates for the sales variable, d2, by sector. Please, note that for this specific question, refusals were not separately identified from “Don’t know” responses.
The number of interviews per contacted establishments was 51.9%.
Since the sampling design was stratified and employed differential sampling, individual observations should be properly weighted when making inferences about the population. Under stratified random sampling, unweighted estimates are biased unless sample sizes are proportional to the size of each stratum. With stratification the probability of selection of each unit is, in general, not the same. Consequently, individual observations must be weighted by the inverse of their probability of selection (probability weights or pw in Stata.)
Special care was given to the correct computation of the weights. It was imperative to accurately adjust the totals within each region/industry/size stratum to account for the presence of ineligible units (the firm discontinued businesses or was unattainable, education or government establishments, no reply after having called in different days of the week and in different business hours, no tone in the phone line, answering machine, fax line, wrong address or moved away and could not get the new references). The information required for the adjustment was collected in the first stage of the implementation: the screening process. Using this information, each stratum cell of the universe was scaled down by the observed proportion of ineligible units within the cell. Once an accurate estimate of the universe cell (projections) was available, weights were computed using the number of completed interviews.
Dates of collection
Mode of data collection
Computer Assisted Personal Interview [capi]
The structure of the data base reflects the fact that 2 different versions of the survey instrument were used for all registered establishments. Questionnaires have common questions (core module) and respectfully additional manufacturing- and services-specific questions. The eligible manufacturing industries have been surveyed using the Manufacturing questionnaire (includes the core module, plus manufacturing specific questions). Retail firms have been interviewed using the Services questionnaire (includes the core module plus retail specific questions) and the residual eligible services have been covered using the Services questionnaire (includes the core module). Each variation of the questionnaire is identified by the index variable, a0.
Confidentiality of the survey respondents and the sensitive information they provide is necessary to ensure the greatest degree of survey participation, integrity and confidence in the quality of the data. Surveys are usually carried out in cooperation with business organizations and government agencies promoting job creation and economic growth, but confidentiality is never compromised.
The use of this dataset must be acknowledged using a citation which would include:
- the identification of the Primary Investigator (including country name)
- the full title of the survey and its acronym (when available), and the year(s) of implementation
- the survey reference number
- the source and date of download (for datasets disseminated online).
The World Bank. Montenegro - Enterprise Survey (ES) 2019, Ref. MNE_2019_ES_v01_M. Dataset downloaded from https://www.enterprisesurveys.org/portal/login.aspx on [date].
The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses.