Geo-map on participation in pilot screening study for AF, conducted in the municipality of Halmstad, Sweden; divided into 12 parishes (total study group, 848 participants and 367 non-participants). For each parish, a smoothed non-participation ratio (SmNPR) was calculated (range: 0.81 – 1.24; SmNRP = 1 corresponds to the expected participation based on the total study group). A corresponding statistical certainty map based on the calculated posterior probabilities of a parish-specific NPR above 1 given the data [Pr(NPR>1|data)] is also shown [light red color, Pr(NPR>1|data) > 0.90, i.e. a parish with data yielding moderate statistical evidence of lower participation].
Engdahl et al. BMC Public Health 2013 13:715 doi:10.1186/1471-2458-13-715