Objective: Attrition is a common problem in health behaviour change (HBC) trials. When the
degree of attrition differs between treatment conditions, then this is called differential attrition …

… Finally, some items of the Gartlehner tool may be difficult to score, for example because
of overlap between items, as was explained in a commentary by Spigt and Kotz [44]. …

Background The Quebec Back Pain Disability Scale (QBPDS) has been translated into
different languages, and several studies on its measurement properties have been done. …

Background Skilled attendants during labor, delivery, and in the early postpartum period, can
prevent up to 75% or more of maternal death. However, in many developing countries, very …

One of the goals of a pilot study is to identify unforeseen problems, such as ambiguous
inclusion or exclusion criteria or misinterpretations of questionnaire items. Although sample size …

Background Community health workers are widely used to provide care for a broad range of
health issues. Since 2003 the government of Ethiopia has been deploying specially trained …

OBJECTIVE.: This study aimed to identify differences and similarities in health behavior
clusters for respondents with different educational backgrounds. METHODS.: A total of 9449 …

Background Intestinal parasitic infections are highly endemic among school-aged children
in resource-limited settings. To lower their impact, preventive measures should be …

Aim To establish whether workers with frequent leisure time physical activities are at higher
or lower risk of sickness absence compared to inactive workers. Method Self reported and …

… The study area lies in an approximate 1010 km 2 at an altitude of 1900–2300 m above
sea level. Like the rest of the region, the area has a semi-arid climate characterized by …