Table 2.
Factors associated with health-related quality-of-life scores in multivariable linear regression analyses
| HUI3a |
SF-6D |
eQWB |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Effect estimate (95% CI) | P value | η 2 | Effect estimate (95% CI) | P value | η 2 | Effect estimate (95% CI) | P value | η 2 | |
| Age per 10 years | 0.041 (−0.061, 0.153) | 0.449 | 0.002 | 0.007 (−0.007, 0.020) | 0.342 | 0.002 | −0.004 (−0.011, 0.002) | 0.218 | 0.004 |
| Race (Non-White) | 0.112 (−0.138, 0.435) | 0.414 | 0.002 | 0.010 (−0.017, 0.036) | 0.468 | 0.001 | 0.017 (0.001, 0.034) | 0.042 | 0.011 |
| Household income | NA | NA | 0.173 | 0.011 | |||||
| <$40,000 | Reference | ||||||||
| $40,000–$99,999 | 0.014 (−0.002, 0.030) | ||||||||
| $100,000 or more | 0.003 (−0.018, 0.025) | ||||||||
| Body mass index (kg/m2) | −0.028 (−0.046, −0.010) | 0.003 | 0.025 | NA | −0.002 (−0.003, −0.001) | <0.001 | 0.031 | ||
| Weekly UI episode frequencyb | −0.010 (−0.025, 0.004) | 0.155 | 0.006 | −0.003 (−0.004, −0.001) | <0.001 | 0.030 | −0.001 (−0.002, −0.0002) | 0.015 | 0.016 |
| Current smoking | −0.346 (−0.576, 0.011) | 0.057 | 0.010 | NA | NA | ||||
| Hysterectomy | −0.243 (−0.398, −0.048) | 0.018 | 0.016 | NA | NA | ||||
| Fecal incontinence | −0.230 (−0.442, 0.064) | 0.114 | 0.007 | −0.044 (−0.078, −0.010) | 0.012 | 0.017 | −0.017 (−0.038, 0.005) | 0.124 | 0.006 |
| Physical activity (kcals expended per day | NA | 0.002* | 0.028 | 0.010* | 0.017 | ||||
| 1st quartile (range 0,112) | Reference | Reference | |||||||
| 2nd quartile (range 140, 364) | 0.016 (−0.014, 0.045) | 0.007 (−0.011, 0.025) | |||||||
| 3rd quartile (range 392, 1,078) | 0.020 (−0.009, 0.049) | 0.018 (0.0001, 0.036) | |||||||
| 4th quartile (range 1,092, 7,841) | 0.047 (0.018, 0.077) | 0.022 (0.003, 0.040) | |||||||
| Pelvic organ prolapse surgery | NA | NA | −0.026 (−0.059, 0.007) | 0.123 | 0.006 | ||||
| Post-menopausal | NA | 0.021 (−0.007, 0.049) | 0.136 | 0.006 | NA | ||||
Analyses controlled for clinic site, NA indicates that variable was not included in the final multivariable model, HUI3 Health Utilities Index Mark 3, eQWB estimated Quality of Well-Being score
a
Log transformation applied; effect on the outcome is expressed as proportional change in HUI3
b
Log transformation applied; estimate coefficient is per 10% increase in weekly UI episode frequency
*
P value is for the trend
η2 statistic indicates the proportion of variance explained by each variable independently in the multivariable model