Kenya - Nairobi HDSS INDEPTH Core Dataset 2003-2015 (Release 2018)

Start	End	Cycle
2003-01-01	2015-12-31	Release Coverage

Start	End	Cycle
2002-08-01		Round 0
2002-10-16		Round 1
2003-01-21		Round 2
2003-05-04		Round 3
2003-09-02		Round 4
2004-01-23		Round 5
2004-05-28		Round 6
2004-09-25		Round 7
2005-01-23		Round 8
2005-06-14		Round 9
2005-09-27		Round 10
2006-01-13		Round 11
2006-05-01		Round 12
2006-09-01		Round 13
2007-02-24		Round 14
2007-05-29		Round 15
2007-09-25		Round 16
2008-01-01		Round 17
2008-09-01		Round 18
2009-01-01		Round 19
2009-06-23		Round 20
2009-09-26		Round 22
2010-01-20		Round 21
2010-05-04		Round 23
2010-09-01		Round 24
2011-01-01		Round 25
2011-05-05		Round 26
2011-09-09		Round 27
2012-01-01		Round 28
2012-05-02		Round 29
2012-09-04		Round 30
2013-01-27		Round 31
2013-06-01		Round 32
2013-10-23		Round 33
2014-02-03		Round 34
2014-05-16		Round 35
2014-09-15		Round 36
2014-12-25		Round 37
2015-06-18		Round 38
2016-01-21		Round 39
2016-06-08		Round 40
2016-09-28		Round 41

Proxy Respondent [proxy]

Interviews are conducted in Swahili (the country's national language), with translation into the local dialects in specific situations where the respondent is unable to understand Swahili.

A detailed 4-week training of enumerators was conducted at baseline. Currently, 3-5 days refresher trainings are conducted at the start of each new round of data collection



The field team constitutes 32 staff: 25 interviewers,4 team leaders, 2 supervisors, and 1 field coordinator. On average a complete household interview takes between 30 minutes and 45 minutes to complete. Interviews took place everyday throughout the field work period, with teams being permitted to take only one day off per week.



Prior to the baseline detailed community sensitization was undertaken, in latter rounds however community liaison has constituted, feedback barazas, and intervention activities targeted to address community health-related problems identified during the data collection. Intervention activities are carried out through piggy-back studies with targeted interventions, for example a maternal and child health study had a component of interventions to address mother and child health-complications, or through bi-annual health camps at which free medical treatment is provided for conditions identified as prevalent in the community during data collection.



Questionnaires are printed and administered in Swahili (The country's national language)



The questionnaires for the Nairobi HDSS were structured questionnaires based on the INDEPTH Model Questionnaire and were translated into Swahili with some modifications and additions.After an initial review the questionnaires were translated back into English by an independent translator with no prior knowledge of the survey. The back translation from the Swahili version was independently reviewed and compared to the English original. Differences in translation were reviewed and resolved in collaboration with the original translators.

The English and Swahili questionnaires were both piloted as part of the survey pretest.



At baseline a household questionnaire was administered in each household, which collected various information on household members including sex, age, relationship, and orphanhood status. In later rounds questionnaires to track the migration of the population observed at baseline, and additonal questionnaires to capture demographic and health events happening to the population have been introduced.

Name	Abbreviation	Affiliation
Data, Measurement & Evaluation Unit	DME	African Population and Health Research Center

Interviewing is conducted by teams of interviewers. Each interviewing team comprised 3-4 interviewers, a field editor and a site supervisors. The role of the supervisor is to coordinate field data collection activities, including management of the field teams, supplies and equipment, finances, maps and listings, coordinate with local authorities concerning the survey plan and make arrangements for accomodation and travel. Additionally, the field supervisor assigned the work to the interviewers, spot checked work, maintained field control documents, and sent completed questionnaires and progress reports to the central office. The field editor is responsible for reviewing each questionnaire at the end of the day, checking for missed questionnaires, skip errors, fields incorrectly completed, and checking for inconsistencies in the data. The field editor also observed interviews and conducted review sessions with interviewers. Responsibilities of the supervisors and field editors are described in the Instructions for Supervisors and Field Editors, together with the different field controls that were in place to control the quality of the fieldwork.