The duration of the intervention period is 10 months during which data are obtained using a battery of survey instruments, and aggregate services delivery data, as described above.
Seafood consumption data are collected for different purposes using a variety of survey instruments.
Sleep health assessment using a set of survey instruments adapted from POTASH [ 24]: Epworth Sleepiness Scale (ESS) [ 48, 49], Insomnia Severity Index (ISI) [ 50], Multivariate Apnea Prediction Index (MAPI) [ 51] and International Restless Legs Syndrome Study Group (IRLSSG) [ 52].
Twelve data collectors, six male and six female, who have experience in data collection and measurements were recruited and trained on the administration of survey instruments using training manual, developed for the survey based on the WHO training and practical guide [ 24, 25].
A number of theoretic perspectives have influenced the development of survey instruments that are used to assess adoption (or acceptance) of a new technology.
The internal consistency of survey instruments was evaluated using Cronbach's alpha coefficient to determine the extent to which items within each questionnaire were interrelated [ 63].
Despite several studies using CE to enable the cultural adaptation of survey instruments and the cultural appropriateness of the programme (4, 18, 59, 60, 62, 68, 69), only one study clearly demonstrated the cultural validity of the adapted programme (59).
A team of 20 national facilitators was trained in the use of the survey instruments and in the clinical presentation of the disease in an endemic focus.
