Table 2.
Quality evaluation of the cohort studies included in meta-analysis
| Study ID | Selection | Comparability | Outcome | Quality assessment score | |||||
|---|---|---|---|---|---|---|---|---|---|
| Representativeness of the exposed cohort | Selection of the non-exposed cohort | Ascertainment of exposure | Demonstration that outcome of interest was not present at start of study | Comparability of cohorts on the basis of the design or analysis | Assessment of outcome | Was follow-up long enough for outcomes to occur | Adequacy of follow up of cohorts | ||
| Wang[17] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Lei Wang[18] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | ★ | 9 |
| Dandan Li[19] | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
| Xiaoai Chen[20] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | ★ | 9 |
| Chun Shen[21] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Yilin Zhao[22] | ★ | ★ | ★ | ★★ | ★ | ★ | 7 | ||
| Jiwen Cheng[23] | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
| Na Liu[24] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | 8 | |
| Peihong Yan[25] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | 8 | |
| Ginstrom, Daniel A[26] | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
| Yuqi Ren[27] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | ★ | 9 |
| Seung Hwan Baek[28] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Kin Wai E Chan[29] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| J H Chuang[30] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | 8 | |
| Ho Yu Chung[31] | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
| Rui Dong[32] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Mauricio A Escobar[33] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Xisi Guan[34] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Sheng-Yang Huang[35] | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
| Yi Ji[36] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | 8 | |
| Naruhiko Murase[38] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | 8 | |
| Yuki Ogasawara[39] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | 9 | |
| Andrea Pietrobattista[41] | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
| Mark D Stringer[42] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Thomas M Tarro[43] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Paisarn Vejchapipat[44] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Momoko Wada[45] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Wei Wang[46] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Wenjun Shen[47] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| E T Wu[48] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Longying Yan[49] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | 8 | |
| Yuhong Zhang[50] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Zebing Zheng[52] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Chunqiang Dong[53] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Wenying Hou[54] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | 8 | |
| HuiXiao[55] | ★ | ★ | ★ | ★★ | ★ | 6 | |||
| Yanyang Li[56] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| HaiWei Lin[57] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 8 |
| Juntao Pan[58] | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
| Willemien de Vries[59] | ★ | ★ | ★ | ★★ | ★ | ★ | ★ | 8 | |
| Yixi Wang[60] | ★ | ★ | ★ | ★★ | ★ | ★ | 7 | ||
| Yi Wang[61] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Yuan Wei[62] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Jingru Zhang[63] | ★ | ★ | ★ | ★★ | ★ | ★ | ★ | 8 | |
| Shengqiao Zhao[64] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 8 |
| Claude Ecoffey[65] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| K P Lally[66] | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
| Rebecka L. Meyers[67] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Oliver B. Lao[68] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Masaki Nio[69] | ★ | ★ | ★ | ★★ | ★ | ★ | ★ | 8 | |
| Saeki, M[70] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
| Kobayashi, H[71] | ★ | ★ | ★ | ★★ | ★ | ★ | 7 | ||
| Yumi Inoue[72] | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
| Ramachandran, P[73] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | 8 | |