Table 1.
Studied sample characteristics and vaginal tactile imaging parameters
| Age (y) | Weight (lb) | Resistance (N) | Work (mJ) | Stress to strain (kPa/mm) | Pressure at rest (kPa) | Anterior-posterior force (N) | Left-right force (N) | Contraction pressure (kPa) | Contraction force (N) | |
|---|---|---|---|---|---|---|---|---|---|---|
| Mean | 52.7 | 152.6 | 1.09 | 41.3 | 1.94 | 26.8 | 1.66 | 0.98 | 41.8 | 3.20 |
| SD | 16.1 | 26.7 | 0.70 | 22.7 | 1.42 | 13.3 | 0.87 | 0.74 | 18.4 | 1.94 |
| Minimum | 26 | 110 | 0.21 | 4.5 | 0.28 | 4.7 | 0.47 | 0.18 | 5.9 | 0.39 |
| Maximum | 90 | 200 | 3.54 | 96.3 | 6.93 | 63.8 | 4.00 | 3.07 | 106.0 | 9.52 |
| Correlation (R) with age | — | — | −0.36 | −0.48 | −0.26 | −0.28 | −0.40 | −0.54 | −0.32 | −0.36 |
| t-test (≤52 vs >52 y old; P value) | — | — | 0.007 | 0.002 | 0.05 | 0.23 | 0.04 | 0.005 | 0.20 | 0.05 |
| Correlation (R) with weight | — | — | −0.12 | −0.10 | −0.19 | −0.24 | −0.05 | 0.05 | −0.05 | −0.06 |
| t-test (≤152 vs >152 lb; P value) | — | — | 0.99 | 0.91 | 0.64 | 0.37 | 0.94 | 0.74 | 0.53 | 0.38 |
| Mean (nulliparous) | — | — | 1.44 | 50.9 | 2.55 | 30.4 | 2.08 | 1.42 | 51.7 | 3.75 |
| Mean (parous) | — | — | 1.01 | 37.8 | 1.72 | 25.6 | 1.51 | 0.82 | 38.2 | 3.00 |
| t-test (nulliparous vs parous; P value) | — | — | 0.05 | 0.10 | 0.10 | 0.30 | 0.06 | 0.02 | 0.04 | 0.27 |