8
Methodology In order to maintain uniform survey procedures and follow standard protocols established in GATS, four manuals were
developed. The field interviewer manual consists of instructions for interviewers regarding interviewing techniques, field procedures, method of asking questions and, most importantly, the use of handheld devices for data collection. The field
supervisor manual contains a detailed description on the role and responsibilities of the supervisor. It also contains information on data aggregation and transfer procedures for supervisors. The question-by-question specifications manual
provides question-by-question instructions to the field interviewers on administering the GATS household and individual questionnaires using the handheld computer. It also contains information on range checks, response options, and purpose
and instructions on each question included in the survey. All the manuals were first developed in English and then translated into Indonesian for the training. A total of 100 interviewers and 81 supervisors were trained in 12 regional
training centres for a period of three days for a few participants or four days for more participants in the beginning of October 2011. This training was facilitated by two facilitators one for the questionnaire and one for IT who had been
trained separately by a GATS team member in Jakarta prior to this training. The facilitator training was conducted at the end of September 2011. Training included lectures on understanding the contents of the questionnaires, how to complete
the questionnaires using handheld devices, mock interviews between participants and field practice interviews.
2.5.4. Updating of the household list
Updating of the household list was the first GATS activity in the field after the pretest implementation. BPS-Statistics Indonesia Headquarters prepared the list of households from the 2010 Population Census of Indonesia for each selected CB
and sent the list to the BPS-Regional Office. In each selected CB, the list of households was updated in order to obtain the up-to-date household conditions within the CB. In carrying out the updating, the field enumerator utilized a map
of the selected SSU
CB used during the 2010 Population Census. Personnel of the BPS-Regional Office worked at the field level to update the relevant information of the household as per the current situation. The updating operation was conducted in
September 2011. After all households in the selected CB had been updated, the up-to-date lists of households were then sent back to the BPS-Statistics Indonesia Headquarters as an up-to-date frame for household sample selection. The selected
households were then prepared as a case file to be put into the handheld devices.
2.5.5. Fieldwork
The GATS data was collected in 19 provinces, 77 districts and 100 PSUs by 100 field interviewers and 81 field supervisors FSs. All field interviewers and FSs were personnel of the BPS regional offices. Both field interviewers and FSs came from
the same BPS regional office at district level in order to maintain good coordination and ensure speedy data collection. Field operations took place over a period of four weeks from 15 October 2011 to 24 November 2011.
Field interviewers were responsible for collecting information on questionnaires using handheld devices. FSs were responsible for the overall operation of the field enumeration. In addition, the FSs conducted spot checks to verify
information collected by interviewers and also to ensure the accuracy of household identification in the field. In order to ensure that the standard quality-control procedures has been implemented correctly by the field interviewers, key
members of the GATS team visited the field to monitor data collection. FSs were also responsible for aggregating the interviewer-level data to the secure digital SD card provided to make a back-up; and using a card reader through internet
connection available in the BPS-Regional Office, the FSs then sent the data to the data centre at the BPS-Statistics Indonesia Headquarters.
2.6. Data processing and aggregation
