. Author manuscript; available in PMC: 2008 Apr 1.

Published in final edited form as: Am J Prev Med. 2008 Mar;34(3):185–191. doi: 10.1016/j.amepre.2007.11.020

Table 2.

Primary outcome results by randomized group in Solomon 4-group design and total combined groups

	Dilated fundus exam within 6 months Number (%)
Study group	No	Yes	Total combined
Telephone/pretest	99 (66.9)	49 (33.1)	148 (100)
Telephone/no pretest	103 (65.6)	54 (34.4)	157 (100)
Print/pretest	118 (80.9)	28 (19.2)	146 (100)
Print/no pretest	118 (80.3)	29 (19.7)	147 (100)
Total	438 (73.2)	160 (26.8)	598 (100)
Combined groups^a
Telephone	202 (66.2)	103 (33.8)	305 (100)
Print	236 (80.6)	57 (19.5)	293 (100)

RR=1.74, χ²=15.63, p<0.0005