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. 2018 Jul 10;7(7):e10174. doi: 10.2196/10174

Table 4.

Overall recruitment goals of adolescent men who have sex with men (AMSM) based on allocation based on population prevalence, planned recruitment, and ratio of planned to proportional allocations for a randomized controlled trial of a life skills intervention.

Race/ethnicity Proportionala, n Plannedb, n Relative recruitmentc, n
Hispanic 96 115 1.2
White 311 125 0.4
African American/black 141 155 1.1
Asian 35 50 1.5
American Indian or Alaska Native 2 50 25.6d
Native Hawaiian/Other Pacific Islander 1 50 >100.0d
Multiracial 14 55 3.8d
Total 600

aProportional recruitment is determined by multiplying the estimated proportion of all AMSM in the four regions by the total study enrollment (N=600).

bPlanned enrollment is an empirically determined set of requirement targets.

cRelative recruitment is the ratio of the planned/proportional recruitment numbers, representing the relative under- or overrepresentation of the population in the planned sample, relative to their representation in the overall population of the study areas.

dThese relative recruitment values are calculated from proportional recruitment numbers with more precision than those displayed in the proportional column (eg, for Native Hawaiian/Other Pacific Islander, the proportional sample is calculated as 0.0016 person, but it is depicted as 1 since fractional recruitment of participants is not possible) . Therefore, the relative recruitment differs from the simple ratio of the planned to proportional for these groups.