Pilot testing was performed in an area that had not been selected for
inclusion in the survey. Approximately 3–4 households were sampled by
each team, and the quality of the sample collection, including anthropometric
measurements and questionnaire completion, were examined.
Any teams that made major errors such as incorrect labeling, poorly
filled questionnaires, or missing records were asked to repeat the pilot
test after a review of the areas of concern.
During survey implementation, teams in the NEZ and NWZ were
able to work in close proximity to each other and move systematically
within each zone. Each team was allocated a preselected list of clusters,
which eased both logistics and team supervision. All biologic samples
and questionnaires were compiled by the team supervisors upon finishing
a cluster and reviewed by the laboratory coordinators and the study
coordinator, respectively. Continuous monitoring of errors and discussion
of concerns helped to improve subsequent data collection in each
cluster for the teams. However, this type of practice was not possible in
the SCZ. Here, teams were allocated to areas on the basis of clan
settlement patterns, and each team was sent to clusters around their
home area. Due to security restrictions, team supervision was not
possible in all of the clusters, and where possible, teams were supervised
at the start of their first cluster. In the SCZ it proved to be impossible to
provide any field-level senior supervision of the team surveying the 3
clusters in Middle Juba.
Pilot testing was performed in an area that had not been selected forinclusion in the survey. Approximately 3–4 households were sampled byeach team, and the quality of the sample collection, including anthropometricmeasurements and questionnaire completion, were examined.Any teams that made major errors such as incorrect labeling, poorlyfilled questionnaires, or missing records were asked to repeat the pilottest after a review of the areas of concern.During survey implementation, teams in the NEZ and NWZ wereable to work in close proximity to each other and move systematicallywithin each zone. Each team was allocated a preselected list of clusters,which eased both logistics and team supervision. All biologic samplesand questionnaires were compiled by the team supervisors upon finishinga cluster and reviewed by the laboratory coordinators and the studycoordinator, respectively. Continuous monitoring of errors and discussionof concerns helped to improve subsequent data collection in eachcluster for the teams. However, this type of practice was not possible inthe SCZ. Here, teams were allocated to areas on the basis of clansettlement patterns, and each team was sent to clusters around theirhome area. Due to security restrictions, team supervision was notpossible in all of the clusters, and where possible, teams were supervisedat the start of their first cluster. In the SCZ it proved to be impossible toprovide any field-level senior supervision of the team surveying the 3
clusters in Middle Juba.
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