Sentence examples for volunteer effect from inspiring English sources

Second, like other volunteer studies, the LongROAD study is likely to include participants that are healthier than the general population (the "healthy volunteer effect").

This cross-sectional descriptive analysis sought to determine if a healthy volunteer effect can be demonstrated among smokers selected to participate in a dietary intervention trial.

The "healthy volunteer effect" could be intensified by the reliance on healthcare systems for recruiting study participants because healthcare utilizers are on average healthier and more affluent than non-utilizers (Schneeweiss and Avorn 2005).

Rates were reduced by 20% for a healthy volunteer effect.

No other healthy volunteer effect was allowed for.

However, it is likely that a similar healthy volunteer effect exists in individuals enrolled in screening programmes for colorectal cancer.

Although, age and sex distribution in the study subjects were comparable with those of the general population, suggesting that the present study overcame volunteer effects in part.

However, due to volunteer effects and to the unique environment of a randomized controlled trial setting, the applicability of these findings to a real world setting remains uncertain.

Because all four sites are involved in both "on" and "off" phases, this particular study design also balances case mix and controls for Hawthorne or volunteer effects, as well as issues related to "institutional learning" over time [ 39, 40, 42].

Why? -How might virtual volunteering effect education in the world's poorest regions?

The much lower prevalence of smoking in the UK Biobank sample compared with the UK population (currently 19% for women and 20% for men 21) is unsurprising and indicative of the "healthy-volunteer effect".