The researchers provided hospitals with the surveys, information letters, and informed consent forms which were distributed to nursing staff by their managers primarily during departmental nursing meetings; one hospital attached the surveys to pay-stubs.
In most surveys, information on this cohort is difficult to accurately assess.
In sample surveys, information is collected from a sample of units from a finite population.
As in similar surveys, information on health care seeking (decision to seek care and choice of provider) is available only for individuals who reported illness in the past two weeks.
In addition to the information from household surveys, information was also obtained from water vendors through structured interviews that took place at Duniyar Yangaruwa (water vendor's world) and the neighboring places where water vendors are found.
As in most surveys, information on expenditure was based on recall and thus subject to errors in the reported figures.
