Table 1. Intra-observer reliability and descriptive statistics for lesser pelvic measures in both sexes.
| Factor | Intra-observer reliability Pearson correlation (n=23) | Sex | |
|---|---|---|---|
| Female (n=211) | Male (n=181) | ||
| Transverse diameter (mm) | |||
| Inlet | 0.99*** | 135.0±8.5 | 126.8±7.0 |
| Midplane 1 (biacetabular) | 0.96*** | 122.1±8.3 | 113.8±7.2 |
| Midplane 2 (bispinous) | 0.96*** | 112.2±9.2 | 93.6±8.4 |
| Outlet (bituberous) | 0.98*** | 123.9±10.4 | 103.5±9.3 |
| Sagittal diameter (mm) | |||
| Inlet | 0.95*** | 124.6±10.3 | 119.2±10.2 |
| Midplane 1 | 0.92*** | 131.5±9.9 | 127.8±9.0 |
| Midplane 2 | 0.99*** | 122.8±8.7 | 116.5±7.5 |
| Outlet | 0.95*** | 99.9±9.8 | 96.0±7.4 |
| Pelvic angles (°) | |||
| Sacral slope | 0.93*** | 39±7 | 39±6 |
| Pelvic inclination | 0.97*** | 64±7 | 62±6 |
| Subpubic angle | 0.99*** | 132±12 | 94±12 |
| Pelvic indexes | |||
| Inlet | – | 0.93±0.10 | 0.94±0.08 |
| Midplane 1 | – | 1.08±0.10 | 1.13±0.10 |
| Midplane 2 | – | 1.10±0.10 | 1.25±0.14 |
| Outlet | – | 0.81±0.11 | 0.94±0.11 |
***P<0.001.