PMC:4144696 / 20805-21919 JSONTXT

{"project":"2_test","denotations":[{"id":"25146939-24467862-60562908","span":{"begin":100,"end":102},"obj":"24467862"},{"id":"25146939-21452008-60562909","span":{"begin":799,"end":801},"obj":"21452008"},{"id":"25146939-22911168-60562909","span":{"begin":799,"end":801},"obj":"22911168"},{"id":"25146939-23967900-60562909","span":{"begin":799,"end":801},"obj":"23967900"}],"text":"This participation rate was exceptionally high, and a guarantee of freedom from participation bias [13]. Yet there was apparent under-representation of males aged 18–34 years, according to national census data from 2011. We believe this reflects different survey methods: we would have excluded family members temporarily resident outside the country as migrant workers (mostly young males), but the census might not [30,15]. Employing interviewers familiar with the local culture and sentiments, and who spoke the local language, and enlisting the help of FCHVs who were respected in the community, undoubtedly encouraged participation in the survey (Risal et al. submission of manuscript in Journal Headache and Pain), which exceeded that of studies recently conducted in other countries in Asia [20-22]. So, probably, did the strategy of data collection in early mornings, late evenings, weekends and public holidays. The very high participation rate in this study might also be attributed in part to the collaboration with Dhulikhel Hospital, well-known for its outreach health services throughout the country."}