Review Article
The Association of Haptoglobin Gene Variants and Retinopathy in Type 2 Diabetic Patients: A Meta-Analysis
Table 1
The characteristics of included studies.
| | Study | Year | Country | Number of DR/DWR | Age (DWR) | Age (DR) | Male/female (DR) | Male/female (DWR) | DM duration (years) DR/DWR | BMI
(kg/m2) | HbA1c (%) |
| | Mukund et al. | 2013 | India | 30/15 (NPDR) | 55.93 ± 17.85 | 55.7 ± 11.97 | 16/14 | 7/8 | 11.6 ± 4.77/7.6 ± 3.59 | — | — | | Nitza et al. | 2011 | Finland | 14/84 (PDR) | 69 ± 9.7 | 62 ± 7.8 | 13/1 | 28/56 | 4.3 ± 3.7/19 ± 8 | 28.8 ± 2.5/28.7 ± 5.3 | 8.7 ± 2.5/7.4 ± 1.2 | | Adinortey et al. | 2011 | Ghana | 24/73 | 52.70 ± 1.49 (male) | 56.83 ± 0.97 (male) | 101/189 | 46/62 | — | 26.86 ± 0.51 (male) | | | 51.27 ± 1.48 (female) | 53.36 ± 0.74 (female) | 28.58 ± 0.40 (female) | | | Wobeto et al. | 2006 | Brazil | 97/73 | — | — | — | — | 18.0 ± 5.9/14.6 ± 4.5 (Hp1-1) | — | 8.7 ± 1.9/8.4 ± 1.9 (Hp1-1) | | 16.8 ± 6.6/13.8 ± 4.2 (Hp2-1) | — | 8.8 ± 2.0/7.8 ± 1.9 (Hp2-1) | | 18.8 ± 6.9/14.7 ± 3.7 (Hp2-2) | — | 9.3 ± 1.9/8.3 ± 2.2 (Hp2-2) | | Meng et al. | 2011 | China | 149/168 | 58 ± 10 | 57 ± 11 | 82/67 | 91/77 | 12/9 | 26.3 ± 3.7/26.7 ± 4.0 | 8.77 ± 2.00/8.44 ± 1.91 | | Wang et al. (PDR) | 2011 | China | 101/168 | 58.2 ± 10.6 | 52.8 ± 10.5 | 42/59 | 91/77 | 12.5/9 | 27.0 ± 3.9/26.7 ± 4.0 | 7.84 ± 2.13/8.44 ± 1.91 | | (NPDR) | | | 149/168 | | 57.0 ± 11.1 | 82/67 | 91/77 | 12.0/9 | 26.3 ± 3.7/26.7 ± 4.0 | 8.77 ± 2.00/8.44 ± 1.91 |
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