Table 6.
Characteristics of studies about the percentage of CD4+CD25+Tregs (%) in the CD4+ lymphocyte included in this meta-analysis.
| Author | Year | Country | Case | Control | NOS score | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| SZ | M/F | Mean | SD | SZ | M/F | Mean | SD | ||||
| Afzal [91] | 2014 | Pakistan | 30 | 5/25 | 14.68 | 6.21 | 30 | 21/9 | 14.53 | 4.84 | 8 |
| Afzal∗ [91] | 2014 | Pakistan | 152 | 51/101 | 16.47 | 6.56 | 30 | 21/9 | 14.53 | 4.84 | 8 |
| Chi [92] | 2011 | China | 52 | 30/22 | 9.39 | 2.12 | 40 | 20/20 | 10.43 | 2.07 | 7 |
| Chi∗ [92] | 2011 | China | 68 | 39/29 | 8.99 | 2.03 | 40 | 20/20 | 10.43 | 2.07 | 7 |
| Haseda [70] | 2013 | Japan | 20 | 8/12 | 27.7 | 11.1 | 30 | 10/20 | 24.9 | 6.5 | 7 |
| Ling [93] | 2006 | China | 25 | 12/13 | 1.3 | 0.6 | 27 | 13/14 | 1.3 | 0.4 | 8 |
| Ling [93] | 2006 | China | 20 | 13/7 | 13.76 | 3.27 | 21 | 10/11 | 12.98 | 3.14 | 8 |
| Kukreja [94] | 2002 | USA | 15 | 2/13 | 6.3 | 0.48 | 26 | 12/14 | 6.9 | 0.4 | 8 |
| Hong [95] | 2011 | China | 20 | 10/10 | 5.35 | 2.12 | 25 | 15/10 | 4.06 | 1.39 | 7 |
| Hong∗ [95] | 2011 | China | 18 | 10/8 | 9.8 | 7.27 | 25 | 15/10 | 4.06 | 1.39 | 7 |
| Li∗ [96] | 2012 | China | 20 | 10/10 | 6.24 | 1.96 | 30 | 18/12 | 4.24 | 1.5 | 7 |
| Ye-Hai∗ [97] | 2011 | China | 81 | NR | 6.05 | 1.2 | 38 | NR | 2.01 | 0.73 | 7 |
| Li∗ [72] | 2014 | China | 15 | NR | 9.14 | 2.21 | 21 | 13/8 | 15.18 | 3.6 | 7 |
| Li∗∗ [72] | 2014 | China | 13 | NR | 10.69 | 2.75 | 21 | 13/8 | 15.18 | 3.6 | 7 |
| Wu∗ [98] | 2015 | China | 10 | NR | 2.1 | 1.5 | 20 | 12/8 | 2.3 | 2.2 | 8 |
| Yang [99] | 2007 | China | 30 | 18/12 | 9.84 | 4.78 | 30 | 18/12 | 8.16 | 3.65 | 8 |
| Yang [100] | 2014 | China | 43 | 19/24 | 2.02 | 0.43 | 52 | 28/24 | 2.89 | 0.39 | 6 |
| Xue-he [101] | 2009 | China | 22 | 9/13 | 6.79 | 1.75 | 17 | 8/9 | 7.84 | 1.45 | 7 |
| Zhang [74] | 2009 | China | 17 | 9/8 | 8.5 | 4.16 | 15 | 8/7 | 8.83 | 3.87 | 8 |
| Zhang [102] | 2010 | China | 37 | 24/13 | 0.5 | 0.8 | 38 | 21/17 | 0.7 | 1 | 7 |
| Zhang∗ [102] | 2010 | China | 40 | 26/14 | 4.7 | 2.3 | 38 | 21/17 | 0.7 | 1 | 7 |
| Tao [103] | 2011 | China | 20 | NR | 3.74 | 0.89 | 20 | NR | 3.78 | 0.95 | 8 |
| Zhang [75] | 2012 | China | 16 | 11/5 | 5.29 | 2.6 | 19 | 7/12 | 9.75 | 2.13 | 7 |
| Zhang [104] | 2013 | China | 36 | 19/17 | 8.8 | 3.6 | 20 | 11/9 | 12.4 | 1.5 | 7 |
| Zhang∗ [104] | 2013 | China | 30 | 16/14 | 6.05 | 1.06 | 20 | 11/9 | 12.4 | 1.5 | 7 |
DM: diabetes mellitus; SZ: sample size; M/F: man/female; SD: standard deviation; NR: not reported. ∗,∗∗T2DM with different complication.