A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Study::$Survey_model is deprecated

Filename: core/Loader.php

Line Number: 358

Backtrace:

File: /home/nada.zimstat.co.zw/public_html/application/core/MY_Exceptions.php
Line: 185
Function: include

File: /home/nada.zimstat.co.zw/public_html/application/libraries/Breadcrumb.php
Line: 656
Function: model

File: /home/nada.zimstat.co.zw/public_html/application/libraries/Breadcrumb.php
Line: 116
Function: get_study_info

File: /home/nada.zimstat.co.zw/public_html/application/libraries/Breadcrumb.php
Line: 644
Function: generate

File: /home/nada.zimstat.co.zw/public_html/application/libraries/Breadcrumb.php
Line: 637
Function: to_array

File: /home/nada.zimstat.co.zw/public_html/themes/nada/layout.php
Line: 58
Function: to_string

File: /home/nada.zimstat.co.zw/public_html/application/libraries/Template.php
Line: 712
Function: view

File: /home/nada.zimstat.co.zw/public_html/application/controllers/Study.php
Line: 325
Function: render

File: /home/nada.zimstat.co.zw/public_html/application/controllers/Study.php
Line: 55
Function: render_page

File: /home/nada.zimstat.co.zw/public_html/index.php
Line: 343
Function: require_once

Backtrace

Line #358 of /home/nada.zimstat.co.zw/public_html/system/core/Loader.php
```
_error_handler()
```
Line #656 of /home/nada.zimstat.co.zw/public_html/application/libraries/Breadcrumb.php
```
CI_Loader->model()
```
Line #116 of /home/nada.zimstat.co.zw/public_html/application/libraries/Breadcrumb.php
```
Breadcrumb->get_study_info()
```
Line #644 of /home/nada.zimstat.co.zw/public_html/application/libraries/Breadcrumb.php
```
Breadcrumb->generate()
```
Line #637 of /home/nada.zimstat.co.zw/public_html/application/libraries/Breadcrumb.php
```
Breadcrumb->to_array()
```
Line #58 of /home/nada.zimstat.co.zw/public_html/themes/nada/layout.php
```
Breadcrumb->to_string()
```
Line #968 of /home/nada.zimstat.co.zw/public_html/system/core/Loader.php
```
include()
```
Line #495 of /home/nada.zimstat.co.zw/public_html/system/core/Loader.php
```
CI_Loader->_ci_load()
```
Line #712 of /home/nada.zimstat.co.zw/public_html/application/libraries/Template.php
```
CI_Loader->view()
```
Line #325 of /home/nada.zimstat.co.zw/public_html/application/controllers/Study.php
```
Template->render()
```
Line #55 of /home/nada.zimstat.co.zw/public_html/application/controllers/Study.php
```
Study->render_page()
```
Line #532 of /home/nada.zimstat.co.zw/public_html/system/core/CodeIgniter.php
```
Study->metadata()
```
Line #343 of /home/nada.zimstat.co.zw/public_html/index.php
```
require_once()
```

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$Survey_model is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home/nada.zimstat.co.zw/public_html/application/core/MY_Exceptions.php
Line: 185
Function: include

File: /home/nada.zimstat.co.zw/public_html/application/libraries/Breadcrumb.php
Line: 638
Function: view

File: /home/nada.zimstat.co.zw/public_html/themes/nada/layout.php
Line: 58
Function: to_string

File: /home/nada.zimstat.co.zw/public_html/application/libraries/Template.php
Line: 712
Function: view

File: /home/nada.zimstat.co.zw/public_html/application/controllers/Study.php
Line: 325
Function: render

File: /home/nada.zimstat.co.zw/public_html/application/controllers/Study.php
Line: 55
Function: render_page

File: /home/nada.zimstat.co.zw/public_html/index.php
Line: 343
Function: require_once

Backtrace

Line #931 of /home/nada.zimstat.co.zw/public_html/system/core/Loader.php
```
_error_handler()
```
Line #495 of /home/nada.zimstat.co.zw/public_html/system/core/Loader.php
```
CI_Loader->_ci_load()
```
Line #638 of /home/nada.zimstat.co.zw/public_html/application/libraries/Breadcrumb.php
```
CI_Loader->view()
```
Line #58 of /home/nada.zimstat.co.zw/public_html/themes/nada/layout.php
```
Breadcrumb->to_string()
```
Line #968 of /home/nada.zimstat.co.zw/public_html/system/core/Loader.php
```
include()
```
Line #495 of /home/nada.zimstat.co.zw/public_html/system/core/Loader.php
```
CI_Loader->_ci_load()
```
Line #712 of /home/nada.zimstat.co.zw/public_html/application/libraries/Template.php
```
CI_Loader->view()
```
Line #325 of /home/nada.zimstat.co.zw/public_html/application/controllers/Study.php
```
Template->render()
```
Line #55 of /home/nada.zimstat.co.zw/public_html/application/controllers/Study.php
```
Study->render_page()
```
Line #532 of /home/nada.zimstat.co.zw/public_html/system/core/CodeIgniter.php
```
Study->metadata()
```
Line #343 of /home/nada.zimstat.co.zw/public_html/index.php
```
require_once()
```

Poverty Income Consumption and Expenditure Survey 2011

Zimbabwe, 2011 - 2012

Zimbabwe National Statistical Agency

Identification

idno

ZWE_2011_PICES_v01_M_v01_A_SUF

Title

Poverty Income Consumption and Expenditure Survey 2011

Subtitle

Scientific Use File

Country

Name	Country code
Zimbabwe	ZWE

Abstract

The Poverty Income, Consumption, and Expenditure Survey (PICES) is the main data source for the compilation of national accounts aggregates and also provides information on living conditions, poverty levels and weights for the consumer price index (CPI).

The objectives of the survey are to provide data to enable:

· estimation of private consumption expenditure and disposable income of the household sector;
· compilation of weights for the Consumer Price Index (CPI);
· compilation of the production account of the agricultural sector for households in communal lands, small scale commercial farms, large scale commercial farms and resettlement areas;
· measurement of inequality and poverty;
· the study of income/expenditure disparities among socio-economic groups
· estimation of the contribution of the informal sector to GDP in Zimbabwe
· estimation of the size of household transfer incomes within and outside the country;
· the carrying out of market research by analysts

Kind of Data

Sample survey data [ssd]

Unit of Analysis

Household

Version

Version number

v01 Edited, anonymous dataset for public distribution.
Anonymization details provided in anonymization report provided as Related Materials.

Version Date

2017-11-15

Coverage

Geographic Coverage

National Coverage

Geographic Unit

Province
District
Rural
Urban

Unit of Analysis

Household

Universe

Population can be enumerated using two methods: a "de jure" and a "de facto" population count. A " de jure" count is the enumeration of persons, who usually reside in a given place, whereas a "de facto" count is the enumeration of persons physically present at a specified place. For this survey we adopt the "de jure" concept. The usual members may be present or temporarily absent. We are thus concerned about the de jure household. A household is a single person or a group of people who usually live, cook and eat together, they may be related or not.

Producers and sponsors

Authoring entity/Primary investigators

Agency Name	Affiliation
Zimbabwe National Statistical Agency	Ministry of Finance and Economic Development

Producers

Name	Role
United Nations Development Programme	Technical Support
United Nations Children’s Fund	Technical Support
African Capacity Building Foundation	Technical Support
African Development Bank	Technical Support
Department for International Development	Technical Support
United States Agency for International Development- Strategic Economic Research and Analysis	Technical Support
World Bank	Technical Support
Ministry of Labour and Social Services	Technical Support

Funding Agency/Sponsor

Name	Abbreviation
United Nations Development Programme	UNDP
United Nations Children’s Fund	UNICEF
Department for International Development	DFID
African Capacity Building Foundation	ACBF
African Development Bank	AfDB
Government of Zimbabwe	GoZ

Sampling

Sampling Procedure

This survey was based on a sample of 31,248 households which is representative at province and district levels. The sample design entailed two stages: selection of Enumeration Areas (EAs) as the first stage and selection of households in these EAs as the second stage. In total 2,232 EAs and 31,248 households were selected with Probability Proportional to Size (PPS), the measure of size being the number of households enumerated in the 2002 Population Census. Additional details on sampling are available in chapter 1 the PICES report provided under the Related Materials section.

Response Rate

The number of EA's which were successfully interviewed in the 12 months of the study was 2,220 giving a coverage response rate of 99.5 percent. Out of a total of 30,838 households interviewed 29,765 questionnaires were fully completed. Partly completed questionnaires were excluded from the analysis as they would distort average incomes and expenditures. Based on a total of 29,765 households with fully completed questionnaires the response rate calculated using the original sample is 95.3 percent.

Weighting

In order for the sample estimates from the PICES 2011/12 to be representative of the population, it was necessary to multiply the data by a sampling weight, or expansion factor. The basic weight for each sample household would be equal to the inverse of its probability of selection (calculated by multiplying the probabilities at each sampling stage). Additional details on weighting are provided in Section 1.7 of the survey report.

Data Collection

Dates of Data Collection (YYYY/MM/DD)

Start date	End date
2011-06-01	2012-05-31

Mode of data collection

Face-to-face [f2f]

Supervision

In order to ensure quality of data the Head Office and Provincial Supervisors put the following quality control measures in place:

Head Office Supervisors
· Carryout spot checks and ensure work is undertaken properly
· Ensure all project work is going according to schedule
· Listen to some selected interviews to check if questions were being asked correctly
· Resolve any challenges encountered in the province promptly
· Document challenges faced in the field and the corresponding solutions used
· Ensure appropriate and required quantities of materials are directed to; and reach the desired destination and are properly utilized
· Re-interview selected households as quality control
· Check that the households were completing the daily record books (DRBs) provided by enumerators
· Ensure that all field staff have received their monthly field allowances
· Write field reports which are used as monitoring tools

Provincial Supervisors
· See to it that enumerators are performing their work according to instructions
· Ensure that enumerators go to all selected households; and verify cases of non-contact
· Re-interview selected households to ensure complete enumeration
· Check each questionnaire for completeness and consistency before submitting the questionnaires to the Head Office
· Ensure that all questionnaires are submitted to Head Office on time
· Carry-out the day-to-day supervision of enumerators' work
· Liaise with Head Office to discuss any technical or logistics problems encountered in the field
· Ensure that enumerators are paid their field allowances

Data Collectors

Name	Abbreviation	Affiliation
Zimbabwe National Statistical Agency	ZIMSTAT	Ministry of Finance and Economic Development

Data Processing

Cleaning Operations

Data processing involved coding and editing of the questionnaires and data entry. The main reason why data processing was started early was to ensure that data processing is started whilst data collection was in progress. This enabled field staff to be informed of the quality of data collection whilst they were still in the field. It was also found necessary that any queries on the data could be resolved whilst the field staff remembered what transpired. This was also deemed necessary because the number of questionnaires received could be checked promptly and discrepancies on the questionnaires received and those expected would be investigated immediately and resolved.

During data processing one member of staff was given 4 batches to be completed in six days. About 80 ZIMSTAT staff members were requested to work outside normal business hours on workdays and on Saturdays. The first two days were for initial entry while the other two days were for verification entry. Two persons exchanged questionnaires during the verification stage. The third stage was to check for differences between the two entries and any errors in initial entry were corrected at that stage. A clean file was then set aside to be copied by programmers at the end of each data processing exercise.

Control sheets were used for monitoring the movement of questionnaires from one person to another during the editing and data processing stage. Any errors made during data entry were corrected and all data capture operators were informed of these errors to avoid the same errors being repeated. Furthermore, as part of quality control, the data entry programme had inbuilt quality control programmes such as the skip patterns of the questionnaire and the automatic refusal if an unknown identification code (Geocode) or inconsistent code was entered. Data Entry Supervisors also made spot checks to see work being entered while a Statistical Officer was placed in each of the data entry pools to correct an errors or inconsistencies in a process known as “online editing”.

Data access

Contact

Name	Email	URI
Zimbabwe National Statistical Agency	info@zimstat.co.zw	www.zimstat.co.zw

Conditions

- Licensed datasets, accessible under conditions

Citation requirement

Use of the dataset must be acknowledged using the following citation :

Author's calculation based on the anonymized data set: Zimbabwe National Statistics Agency, Poverty Income Consumption and Expenditure Survey (PICES 2011).Scientific Use File Ref: ZWE_2011_PICES_v01_M._v01_A_SUF Data downloaded from ZIMSTAT Data Archive. www.zimstat.co.zw on [date].

Disclaimer and copyrights

Disclaimer

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.

Contacts

Contact

Name	Email	URI
Zimbabwe National Statistical Agency	info@zimstat.co.zw	www.zimstat.co.zw

Metadata production

Document ID

DDI_ZWE_2011_PICES_v01_M_v01_A_SUF

Producers

Name	Abbreviation	Affiliation	Role
Zimbabwe National Statistics Agency	ZIMSTAT	Ministry of Finance and Economic Development	Documentation of the DDI

Date of Production

2017-11-15

Document version

Version 1 (November, 2017)