Table 1 Characteristics and quality assessment of the included studies
Author | Year | Ethnicity | Country | N | Diabetes | Duration of diabetes (DR/DWR), years | Male (DR/DWR), % | HbA1c (DR/DWR), % | Genotype typing | NOS |
|---|---|---|---|---|---|---|---|---|---|---|
Yang XF [22] | 2014 | Asian | China | 490 | Type 2 | 15 ± 5 / 13 ± 7 | 0.45 / 0.39 | 7.8 ± 1.7 / 7.0 ± 1.4 | PCR-RFLP | 5 |
Kangas-Kontio T [21] | 2009 | Caucasian | Finland | 224 | Type 1/2 | 24 ± 10 / 25 ± 7 | 0.60 / 0.51 | Not reported | RT-PCR/Taqman | 6 |
Abhary S [19] | 2009 | Caucasian | Australia | 487 | Type 1 | 31 ± 13 / 15 ± 9 | 0.39 / 0.48 | 8.8 ± 2.3 / 7.6 ± 2.5 | Mass spectrometer | 5 |
Type 2 | 18 ± 9 / 13 ± 9 | 0.56 / 0.65 | 7.5 ± 3.4 / 6.6 ± 2.9 | |||||||
Churchil AJ [20] | 2008 | Caucasian | UK | 106 | Type 1/2 | 23 / 25 | 0.60 / 0.52 | Not reported | PCR-RFLP | 5 |