Table 3 Subgroup analyses of online intervention in randomized controlled trial in China, 2011
Subgroup | Standard referral n/N (%) | Online Intervention n/N (%) | Difference in proportions % (95% CI) | P value for interaction |
|---|---|---|---|---|
Educational attainment | Â | Â | Â | Â |
 Middle school or lower | 9/19 (47.4) | 5/14 (35.7) | 11.7 (−32.4, 55.7) | 0.012 |
 High school | 45/94 (47.9) | 29/76 (38.2) | 9.7 (−10.0, 29.4) | – |
 College or above | 178/372 (47.8) | 159/411 (38.7) | 9.1 (−0.1, 18.4) | – |
Marital status | Â | Â | Â | Â |
 Currently married | 34/69 (49.3) | 18/45 (40.0) | 9.3 (−15.5, 34.1) | 0.005 |
 Singlea | 198/416 (47.6) | 175/456 (38.4) | 9.2 (0.5, 18.0) | – |
Annual income (US dollar) | ||||
 No income | 16/48 (33.3) | 15/35 (42.9) | −9.6 (−36.7, 17.6) | 0.445 |
 Less than $5,351 | 89/183 (48.6) | 48/145 (33.1) | 15.5 (1.8, 29.3) | – |
 $5351 to 12,485 | 82/167 (49.1) | 82/220 (37.3) | 11.8 (−1.5, 25.2) | – |
 $12,485 or above | 45/87 (51.7) | 48/101 (47.5) | 4.2 (−16.0, 24.4) | – |
Places of meeting sex partner | ||||
 Internet | 209/432 (48.4) | 165/439 (37.6) | 10.8 (2.1, 19.5) | 0.092 |
 Other | 23/53 (43.4) | 28/62 (45.2) | −1.8 (−26.1, 22.6) | – |
Awareness of AIDS-related knowledge | ||||
 Yes | 219/456 (48.0) | 183/474 (38.6) | 9.4 (1.0, 17.9) | 0.010 |
 No | 13/29 (44.8) | 10/27 (37.0) | 7.8 (−25.7, 41.3) | – |