Table 1.
Characteristics of included studies.
| Study | Sampling condition | Age (year) Mean ± SD (Range) |
TOcn (μg/L) Mean ± SD |
TT (nmol/L) Mean ± SD |
BMI (kg/m2) Mean ± SD |
Sample size | NOSa | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OP | Con. | OP | Con. | OP | Con. | OP | Con. | OP | Con. | |||
| Paccou et al., 2012 | 8–10 am fasting |
54 ± 11 (NA) | 50 ± 8 (40–NA) | 15.9 ± 7.6 | 17.3 ± 7.5 | 17.38 ± 5.97 | 14.30 ± 3.85 | 24.4 ± 3.7 | 27.1 ± 5.0 | 79 | 26 | ★★★★★★★★ |
| Lormeau et al., 2004 | 7:30–9 am fasting | 54 ± 12 (NA) | 51 ± 10 (NA) | 14.88 ± 5.6 | 17.39 ± 6.16 | 17.14 ± 6.35 | 12.91 ± 4.79 | 24.51 ± 3.7 | 26.04 ± 3.6 | 33 | 40 | ★★★★★★★★ |
| Pietschmann et al., 2001 | NA | 61 ± 11 (40–76) | 56 ± 12 (38–76) | 20.0 ± 1.5 | 18.9 ± 1.1 | 10.6 ± 0.6 | 11.6 ± 0.7 | NA | NA | 31 | 35 | ★★★★★★★ |
| Gillberg et al., 2001 | 7-8 am fasting |
45 ± 9 (27–57) | 43 ± 10 (27–62) | 9.2 ± 3.5 | 9.1 ± 2.0 | 19.4 ± 6.1 | 17.5 ± 3.9 | 23.9 ± 2.6 | 25.9 ± 3.3 | 20 | 12 | ★★★★★★★ |
| Gillberg et al., 1999 | 7-8 am fasting |
42 ± 9 (27–55) | 43 ± 10 (27–62) | 9.0 ± 3.4 | 8.3 ± 2.4 | 18.1 ± 4.2 | 17.5 ± 3.9 | 23.2 ± 2.8 | 25.9 ± 3.3 | 12 | 12 | ★★★★★★★ |
OP = osteoporotic group; Con. = control group; TOcn = total osteocalcin; TT = total testosterone; BMI = Body Mass Index; NOS = Newcastle-Ottawa Scale; NA = data not available. aRange: 0–9 stars. Studies achieving six or more stars are considered of high quality.