. 2022 Jul 13;22:1337. doi: 10.1186/s12889-022-13633-8

Table 1.

Summary of survey designs and HIV testing for KAIS 2007, KAIS 2012 and KENPHIA 2018

Survey	Survey dates	Design	Interviews	Sample for HIV module	Target population	Sampling frame
KAIS 2007	August-December, 2007	Two-stage stratified cluster sample, where the first stage included selection of 415 clusters from the NASSEP IV, stratified by district and residency, and for urban areas, by socio-economic status, and the second stage included selection of 25 households within each selected cluster	9,691 households, 17,940 adults and adolescents aged 15–64 years	Collected 15,853 blood specimens from 9,049 women and 6,804 men	De facto household resident adults and adolescents aged 15–64 years	National Sample Survey and Evaluation Programme (NASSEP) IV developed from 1999 census; comprised of 1,800 clusters
KAIS 2012	October 29, 2012 to February 3, 2013	Two-stage stratified cluster sample, where the first stage included selection of 372 clusters from NASSEP V, stratified by county and residency, and the second stage included selection of 25 households within each selected cluster. For the child sample, every other household was selected	8,035 households, 13,720 adults and adolescents aged 15–64 years and 1,661 children aged 10–14	Collected 15,966 blood specimens from 4,832 women and 6,785 men; 2,131 girls and 2208 boys aged 18 months to 14 years	De facto household resident children aged 18 months to 14 years; adults and adolescents aged 15 to 64 years	NASSEP V developed from 2009 census; comprised of 5,360 clusters
KENPHIA 2018	June 2018 to February 2019	Two-stage, stratified cluster sample design where the first stage included selection of 800 clusters from NASSEP V and the second stage included selection of 25 households within each selected cluster. For child sample, every third household was selected	16,918 households, 30,384 adults and adolescents aged 15–64 years and 2,687 children aged 10–14	Collected 35,610 blood specimens from 11,726 men and 16,019 women; 4090 boys and 3775 girls	De facto household resident children aged 0–14 years; Adults and adolescents aged 15 to 64 years	NASSEP V

Survey

Survey dates

Design

Interviews

Sample for HIV module

Target population

Sampling frame

KAIS 2007

August-December, 2007

Two-stage stratified cluster sample, where the first stage included selection of 415 clusters from the NASSEP IV, stratified by district and residency, and for urban areas, by socio-economic status, and the second stage included selection of 25 households within each selected cluster

9,691 households, 17,940 adults and adolescents aged 15–64 years

Collected 15,853 blood specimens from 9,049 women and 6,804 men

De facto household resident adults and adolescents aged 15–64 years

National Sample Survey and Evaluation Programme (NASSEP) IV developed from 1999 census; comprised of 1,800 clusters

KAIS 2012

October 29, 2012 to February 3, 2013

Two-stage stratified cluster sample, where the first stage included selection of 372 clusters from NASSEP V, stratified by county and residency, and the second stage included selection of 25 households within each selected cluster. For the child sample, every other household was selected

8,035 households, 13,720 adults and adolescents aged 15–64 years and 1,661 children aged 10–14

Collected 15,966 blood specimens from 4,832 women and 6,785 men; 2,131 girls and 2208 boys aged 18 months to 14 years

De facto household resident children aged 18 months to 14 years; adults and adolescents aged 15 to 64 years

NASSEP V developed from 2009 census; comprised of 5,360 clusters

KENPHIA 2018

June 2018 to February 2019

Two-stage, stratified cluster sample design where the first stage included selection of 800 clusters from NASSEP V and the second stage included selection of 25 households within each selected cluster. For child sample, every third household was selected

16,918 households, 30,384 adults and adolescents aged 15–64 years and 2,687 children aged 10–14

Collected 35,610 blood specimens from 11,726 men and 16,019 women; 4090 boys and 3775 girls

De facto household resident children aged 0–14 years;

Adults and adolescents aged 15 to 64 years

NASSEP V

Abbreviations: NASSEP National Sample Survey and Evaluation Programme, KAIS Kenya AIDS Indicator survey, KENPHIA Kenya Population-based HIV Impact Assessment