Table 2 Summary of HCV prevalence among clients in MMT in China
Groups | Provinces | No of studies | Study Year | Prevalence (individual studies) (95% CI) | Pooled prevalence (provinces) (95% CI) | Pooled prevalence (group) (95% CI) |
|---|---|---|---|---|---|---|
HTAs | Guangxi | 3 | Â | Â | 87.2% (85.4-88.8%) | 70.2% (62.6-76.8%) |
 Zhou XP, 2009 [31] |  | 2007 | 88.8% (83.1-92.8%) |  | ||
 Chang ZR, 2010 [32] |  | 2008 | 87.9% (85.5-89.8%) |  | ||
 Bai Y, 2009 [33] |  | 2009 | 85.5% (82.2-88.3%) |  | ||
| Â | Guizhou | 6 | Â | Â | 61.5% (46.1-75.0%) | |
 Chang ZR, 2010 [32] |  | 2008 | 76.1% (72.7-79.3%) |  | ||
 Wang J, 2008 [102] |  | 2008 | 41.6% (34.6-48.9%) |  | ||
 Deng CK, 2009 [103] |  | 2008 | 61.4% (55.9-66.7%) |  | ||
 Han XJ, 2010 [34] |  | 2009 | 60.0% (54.4-65.4%) |  | ||
 Li XY, 2009 [35] |  | 2009 | 33.5% (27.3-40.4%) |  | ||
 Wang J, 2010 [36] |  | 2009 | 86.7% (80.1-91.4%) |  | ||
| Â | Sichuan | 6 | Â | Â | 77.4% (71.0-82.8%) | |
 Hao C, 2006 [37] |  | 2004 | 67.3% (62.2-72.1%) |  | ||
 Qian HZ, 2007 [38] |  | 2005 | 68.4% (64.4-72.1%) |  | ||
 Dong G, 2009 [41] |  | 2007 | 78.6% (74.0-82.6%) |  | ||
 Wang DY, 2009 [43] |  | 2008 | 83.7% (80.7-86.2%) |  | ||
 Yao W, 2008 [44] |  | 2008 | 82.9% (80.0-85.4%) |  | ||
 Zhao XH, 2009 [104] |  | 2008 | 80.1% (75.9-83.7%) |  | ||
| Â | Xinjiang | 5 | Â | Â | 64.8% (50.0-77.2%) | |
 Liu JB, 2006 [45] |  | 2005 | 69.0% (60.5-76.4%) |  | ||
 Fu LP, 2007 [46] |  | 2006 | 40.0% (36.1-44.0%) |  | ||
 Fang HR, 2008 [47] |  | 2008 | 68.9% (66.5-71.2%) |  | ||
 Yuan L, 2010 [50] |  | 2008 | 72.0% (65.4-77.8%) |  | ||
 Re ZW, 2009 [48] |  | 2008 | 72.0% (64.9-78.2%) |  | ||
| Â | Yunnan | 1 | Â | Â | 23.8% (18.5-30.0%) | |
 Yang GW, 2010 [55] |  | 2008 | 23.8% (18.5-30.0%) |  |  | |
LTAs | Anhui | 2 | Â | Â | 62.3% (17.0-93.0%) | 55.5% (46.4-64.2%) |
 Wang XR, 2007 [105] |  | 2007 | 36.4% (31.0-42.2%) |  | ||
 Zhan SW, 2008 [106] |  | 2007 | 82.8% (77.1-87.3%) |  | ||
| Â | Beijing | 1 | Â | Â | 46.4% (40.7-52.3%) | |
 Du WJ, 2007 [57] |  | 2005 | 46.4% (40.7-52.3%) |  | ||
| Â | Chongqing | 2 | Â | Â | 76.2% (73.6-78.5%) | |
 Zhou X, 2009 [60] |  | 2007 | 74.7% (71.0-78.1%) |  | ||
 Wu GH, 2010 [59] |  | 2008 | 77.2% (74.3-79.9%) |  | ||
| Â | Fujian | 2 | Â | Â | 48.4% (26.2-71.1%) | |
 Wu LH, 2007 [61] |  | 2006 | 36.0% (27.2-45.8%) |  | ||
 Zheng WX, 2009 [62] |  | 2006 | 60.2% (54.8-65.3%) |  | ||
| Â | Gansu | 3 | Â | Â | 23.7% (18.0-30.7%) | |
 Gao LF, 2010 [63] |  | 2009 | 23.8% (18.9-29.5%) |  | ||
 He XX, 2010 [107] |  | 2009 | 19.5% (17.6-21.6%) |  | ||
 Zhu XH, 2010 [64] |  | 2010 | 28.7% (25.3-32.4%) |  | ||
| Â | Guangdong | 8 | Â | Â | 63.7% (25.2-90.1%) | Â |
|  |  Liu XY, 2009 [66] |  | 2007 | 5.4% (4.9-5.9%) |  |  |
|  |  Zhang QL, 2008 [67] |  | 2007 | 30.3% (24.4-37.0%) |  |  |
|  |  Hu WS, 2010 [71] |  | 2008 | 96.0% (90.7-98.3%) |  |  |
|  |  Li LY, 2009 [72] |  | 2008 | 67.0% (57.2-75.5%) |  |  |
|  |  Li YF, 2009 [73] |  | 2008 | 77.0% (70.7-82.3%) |  |  |
|  |  Wang M, 2009 [74] |  | 2008 | 81.6% (66.1-91.0%) |  |  |
|  |  Wang CQ, 2009 [75] |  | 2009 | 77.3% (73.0-81.0%) |  |  |
|  |  Xia L, 2010 [77] |  | 2009 | 62.2% (56.1-68.1%) |  |  |
| Â | Henan | 1 | Â | Â | 10.9% (7.4-15.8%) | Â |
 Wu SX, 2009 [78] |  | 2008 | 10.9% (7.4-15.8%) |  |  | |
| Â | Hubei | 1 | Â | Â | 94.3% (91.2-96.3%) | Â |
 Peng JS, 2007 [108] |  | 2006 | 94.3% (91.2-96.3%) |  |  | |
| Â | Hunan | 5 | Â | Â | 66.4% (49.3-80.1%) | Â |
 Li XL, 2008 [80] |  | 2006 | 49.4% (41.8-57.0%) |  |  | |
 He HX, 2008 [84] |  | 2007 | 58.3% (54.5-62.0%) |  |  | |
 Chen LF, 2009 [83] |  | 2007 | 59.5% (54.9-63.9%) |  |  | |
 Chen C, 2010 [85] |  | 2008 | 51.4% (42.0-60.7%) |  |  | |
 Feng YH, 2010 [86] |  | 2009 | 93.7% (91.2-95.5%) |  |  | |
| Â | Jiangsu | 10 | Â | Â | 61.6% (51.8-70.6%) | Â |
 Xia X, 2007 [109] |  | 2006 | 35.0% (32.6-37.6%) |  |  | |
 Xu YP, 2007 [110] |  | 2006 | 61.0% (56.1-65.6%) |  |  | |
 Wang YP, 2009 [87] |  | 2007 | 70.5% (64.0-76.3%) |  |  | |
 Feng SQ, 2010 [88] |  | 2008 | 52.3% (47.2-57.3%) |  |  | |
 Hao C, 2009 [89] |  | 2008 | 51.8% (47.9-55.6%) |  |  | |
 Song HB, 2010 [111] |  | 2008 | 66.2% (59.6-72.2%) |  |  | |
 Xu GY, 2008 [90] |  | 2008 | 76.2% (67.0-83.5%) |  |  | |
 Zhang MH, 2010 [91] |  | 2008 | 75.1% (70.0-79.6%) |  |  | |
 Yuan ZX, 2010 [92] |  | 2009 | 56.5% (50.1-63.0%) |  |  | |
 Wang WM, 2010 [112] |  | 2010 | 68.8% (62.3-74.7%) |  |  | |
| Â | Ningxia | 2 | Â | Â | 23.0% (16.7-30.9%) | Â |
 Jiang A, 2009 [93] |  | 2007 | 20.3% (17.0-24.0%) |  |  | |
 Liu XP, 2010 [113] |  | 2009 | 28.0% (19.8-37.9%) |  |  | |
| Â | Qinghai | 1 | Â | Â | 70.8% (65.1-75.8%) | Â |
 Hao XQ, 2009 [94] |  | 2008 | 70.8% (65.1-75.8%) |  |  | |
| Â | Shaanxi | Â | Â | Â | 55.3% (43.2-66.7%) | Â |
 Jia W, 2008 [95] | 5 | 2006 | 54.0% (48.3-59.6%) |  |  | |
 Li YC, 2009 [114] |  | 2008 | 60.6% (55.8-65.3%) |  |  | |
 Zhang HF, 2009 [96] |  | 2008 | 40.0% (31.6-49.0%) |  |  | |
 Zang JF, 2010 [115] |  | 2009 | 42.6% (30.9-55.2%) |  |  | |
 Liu HB, 2010 [116] |  | 2010 | 73.8% (69.7-77.5%) |  |  | |
| Â | Shanghai | 2 | Â | Â | 59.7% (54.2-64.9%) | Â |
 Liu Y, 2009 [97] |  | 2008 | 61.2% (54.3-67.6%) |  |  | |
 Du J, 2009 [117] |  | 2009 | 57.0% (47.8-65.8%) |  |  | |
| Â | Zhejiang | 5 | Â | Â | 40.1% (24.7-57.8%) | Â |
 Zhang XH, 2007 [118] |  | 2006 | 28.9% (16.8-45.1%) |  |  | |
 Cai CP, 2008 [99] |  | 2007 | 75.9% (65.8-83.7%) |  |  | |
 Zhang XH, 2008 [110] |  | 2007 | 40.6% (33.4-48.3%) |  |  | |
 Fu YF, 2009 [119] |  | 2008 | 40.4% (35.4-45.6%) |  |  | |
|  |  Su MF, 2010 [101] |  | 2009 | 18.9% (14.8-23.7%) |  |  |