Table 1.
Sexual activity, pregnancy and induced abortion among the Chinese pre-married women participating in premarital medical examinations from all included studies
| Urban/rual | Study site/year | Women | Ave. age (Range) | Sexual activity | Pregnancy | Induced abortion | Reference No. |
| N | n (%;95% CI) | n (%;95% CI) | n (%;95% CI) | ||||
| Urban and rural | Shanghai; 1995–96 | 2580 | NA | 1789 (69; 68–71) | 712 (28;26–29) | 638 (24;23–26) | 13 |
| Urban | Xuhui District, Shanghai; 1999 | 788 | 25 (20–39) | 599 (76; 73 to 79) | 251 (32; 29 to 35) | 215 (27; 24 to 31) | 5 |
| Urban | Baoshan District, Shanghai; 1995–96 | 550 | NA | 298 (54; 50 to 58) | 66 (12; 9 to 15) | 63 (11; 9 to 14) | 6 |
| Urban | Xinghua City, Jiangsu; 2000 | 1,068 | 23 (19–32) | 836 (78; 76 to 81) | NA | 419 (39; 36 to 42) | 7 |
| Urban | Tengzhou City; Shandong; 1998 | 758 | 25 (22–37) | 622 (82; 79 to 85) | NA | 149 (20; 17 to 23) | 8 |
| Urban | Qingdao City; Shandong; 2000 | 2,403 | 27 (22–44) | NA | NA | 561 (23; 22 to 25) | 9 |
| Urban | Jiaxing City, Zhejiang; 2000 | 208 | 25 (21–31) | 157 (75; 69 to 81) | NA | 80 (38; 32 to 45) | 10 |
| Urban | Nanping City; Fujian; 1998–99 | 2,790 | NA | NA | NA | 1,527 (55; 53 to 57) | 11 |
| Rural | Gaotang County; Shandong; 1999 | 5,960 | NA | 1,192 (20; 19 to 21) | NA | 45 (0.8; 0.6 to 1.0) | 12 |
NA data not available