Table 2.
Characteristics of studies included in the meta-analysis for An/Et
| Study | Year | Country | Diagnosis Criteria | Npcos | Ncontrol | Matched factors | BMI | HOMA | 5α- reductase level (An/Et ratio) | NOS scores |
|---|---|---|---|---|---|---|---|---|---|---|
| ANDREW RODIN | 1994 | UK | NIH | 65 | 45 | age, BMI | ≥25 | NR | NS | 6 |
| D. Chin | 2000 | USA | NIH | 9 | 29 | age, BMI | <25 | NR | ↑ | 5 |
| TASOULA TSILCHOROZIDOU | 2003 | UK | NIH | 18 | 19 | age, BMI | <25 | 1.29 | NS | 6 |
| Dimitra A. Vassiliadi | 2009 | UK | Rotterdam criteria | 75 | 28 | BMI | <25 | 1.3 | ↑ | 5 |
| Dimitra A. Vassiliadi | 2009 | UK | Rotterdam criteria | 103 | 72 | BMI | ≥25 | 3.1 | ↑ | 5 |
| Michael W. O’Reilly | 2014 | UK | Rotterdam criteria | 86 | 43 | age, BMI | ≥25 | 2.3 | ↑ | 7 |
Abbreviations: NIH National Institute of Health criteria, BMI body mass index, NR no reporting, NOS Newcastle-Ottawa Quality Assessment Scale