. Author manuscript; available in PMC: 2015 May 19.

Published in final edited form as: Prev Sci. 2010 Mar;11(1):101–112. doi: 10.1007/s11121-009-0153-x

Table 4.

Response rates for Circle of Life, W1 & W2

	W1	W2
Total class population	846	866
Number of parents/guardians (PG) contacted	641	698
% PG contacted/total class	76	81
% PG gave consent/total class	74	79
% PG gave consent/contacted	98	98
Consented eligible youth^a	617	628
% consented eligible youth surveyed	90	86
Overall response rate
% youth surveyed × % parent consented of total eligible	67	68
% youth surveyed × % parent consented of contacted	88	84

Some youth who had parental consent to participate were subsequently found to be ineligible (e.g. out of age range, transferred to off-reservation school etc)