Table 3.
Frequency of Genital-Anal Injuries as a Function of Demographic, Health, Skin Color, and Skin Biomechanical Characteristics among Women Evaluated Following Consensual Intercourse (N=341).
| External Genital Injury | Adjusted Rate Ratio (95% CI) | Injury to Any Area | |||
|---|---|---|---|---|---|
| Internal Genital Injury | Anal Injury | ||||
| Exam I Genital-Anal Injuries as Outcomes | |||||
| Age | 0.98 (0.96, 1.01) | 1.01 (0.99, 1.03) | 0.99 (0.94, 1.03) | 0.99 (0.98, 1.01) | |
| Race (Reference = White) | |||||
| Black | 1.26 (0.40, 4.15) | 1.62 (0.68, 3.80) | 6.41 (0.70, 67.62) | 1.48 (0.69, 3.18) | |
| Hispanic | 0.69 (0.39, 1.23) | 1.34 (0.82, 2.20) | 2.37 (0.68, 8.85) | 0.91 (0.61, 1.37) | |
| Other | 0.41 (0.09, 1.88) | 1.48 (0.43, 3.97) | 8.18 (0.82, 122.71) | 0.92 (0.36, 2.37) | |
| Skin Color | |||||
| Lightness/Darkness (L*) | 1.18 (0.65, 2.14) | 0.88 (0.60, 1.31) | 1.43 (0.45, 4.61) | 1.04 (0.72, 1.51) | |
| Redness/Greenness (a*) | 0.74 (0.48, 1.14) | 0.69 (0.51, 0.93) | 0.76 (0.31, 1.83) | 0.73 (0.55, 0.96) | |
| Yellowness/Blueness (b*) | 1.02 (0.78, 1.33) | 1.07 (0.87, 1.32) | 1.02 (0.58, 1.77) | 1.05 (0.88, 1.26) | |
| Smoker (Reference = No) | 1.05 (0.62, 1.80) | 0.78 (0.50, 1.18) | 0.66 (0.22, 1.90) | 0.94 (0.66, 1.34) | |
| Health Status | 0.79 (0.66, 0.93) | 0.89 (0.78, 1.03) | 0.76 (0.55, 1.04) | 0.82 (0.73, 0.92) | |
| Sunburn Last 12 Months (Reference = No) | 1.04 (0.63, 1.73) | 1.11 (0.74, 1.65) | 0.51 (0.16, 1.52) | 1.02 (0.73, 1.44) | |
| Body Mass Index (BMI) | 0.99 (0.96, 1.03) | 1.00 (0.98, 1.03) | 1.01 (0.94, 1.08) | 1.00 (0.98, 1.02) | |
| Viscoelasticity | 0.96 (0.93, 0.99) | 1.00 (0.98, 1.02) | 0.93 (0.88, 0.98) | 0.97 (0.95, 0.99) | |
| Hydration | 1.01 (0.98, 1.03) | 0.99 (0.97, 1.01) | 1.02 (0.97, 1.06) | 1.00 (0.99, 1.02) | |
| Exam II Genital-Anal Injuries as Outcomes | |||||
| Age | 0.99 (0.97, 1.01) | 1.00 (0.98, 1.01) | 1.00 (0.96, 1.05) | 0.99 (0.98, 1.01) | |
| Race (Reference = White) | |||||
| Black | 0.85 (0.42, 1.74) | 1.19 (0.58, 2.42) | 4.64 (0.64, 36.46) | 1.01 (0.65, 1.84) | |
| Hispanic | 0.59 (0.40, 0.86) | 0.67 (0.45, 1.01) | 1.46 (0.49, 4.52) | 0.61 (0.46, 0.81) | |
| Other | 0.74 (0.26, 1.84) | 0.41 (0.10, 1.14) | 33.07 (5.78, 242.51) | 1.15 (0.63, 2.14) | |
| Skin Color | |||||
| Lightness/Darkness (L*) | 0.87 (0.62, 1.24) | 1.23 (0.87, 1.74) | 0.94 (0.38, 2.38) | 0.97 (0.75, 1.24) | |
| Redness/Greenness (a*) | 0.76 (0.59, 0.97) | 1.22 (0.94, 1.60) | 0.64 (0.33, 1.22) | 0.84 (0.70, 1.01) | |
| Yellowness/Blueness (b*) | 1.24 (1.04, 1.47) | 0.93 (0.78, 1.11) | 1.19 (0.78, 1.85) | 1.14 (1.01, 1.29) | |
| Smoker (Reference = No) | 1.06 (0.76, 1.47) | 0.69 (0.46, 1.01) | 1.13 (0.47, 2.68) | 0.94 (0.73, 1.20) | |
| Health Status | 1.06 (0.94, 1.20) | 0.93 (0.82, 1.05) | 1.31 (0.92, 1.89) | 1.05 (0.96, 1.14) | |
| Sunburn Last 12 Months (Reference = No) | 1.32 (0.96, 1.81) | 1.15 (0.81, 1.59) | 1.73 (0.70, 4.33) | 1.31 (1.03, 1.66) | |
| BMI | 1.00 (0.98, 1.02) | 1.00 (0.98, 1.02) | 0.98 (0.92, 1.04) | 0.99 (0.98, 1.01) | |
| Viscoelasticity | 0.99 (0.97, 1.01) | 1.01 (0.99, 1.03) | 0.98 (0.93, 1.02) | 1.00 (0.98, 1.01) | |
| Hydration | 0.99 (0.98, 1.01) | 1.02 (1.00, 1.03) | 1.02 (0.98, 1.06) | 1.00 (0.99, 1.01) | |
| Exam I Genital-Anal Injury Prevalence | 1.49 (1.37, 1.63) | 2.00 (1.70, 2.34) | 2.63 (1.70, 4.50) | 1.27 (1.21, 1.33) | |
Notes: Bold indicates statistical significance. All models adjusted for time since intercourse. Skin color variables are standardized.