Table 5.
Summary of continuous outcome measures by treatment group. Values are the mean (sd) unless stated otherwise
| Outcome variable | Treatment group | Baseline (n = 250) | 4-month follow-up (n = 220) | Difference* | Within group P† | Between groups P‡ | Effect size§ (95% CI) |
|---|---|---|---|---|---|---|---|
| Primary outcomes: | |||||||
| ICIQ-UI SF | Internet | 10.4 (3.1) | 6.9 (3.1) | 3.4 (3.4) | <0.001 | 0.27 | 0.99 (0.76–1.22) |
| Postal | 10.3 (3.5) | 7.3 (3.9) | 2.9 (3.1) | <0.001 | 0.95 (0.72–1.17) | ||
| ICIQ-LUTSQoL | Internet | 33.6 (6.8) | 27.8 (6.0) | 4.8 (6.1) | <0.001 | 0.52 | 0.79 (0.57–1.01) |
| Postal | 33.6 (8.2) | 28.8 (7.3) | 4.6 (6.7) | <0.001 | 0.68 (0.47–0.89) | ||
| Secondary outcomes | |||||||
| IEF | Internet | 12.7 (12.0) | 4.8 (7.7) | 7.6 (9.1) | <0.001 | 0.23 | 0.84 (0.60–1.08) |
| Postal | 9.4 (8.6) | 4.4 (6.7) | 4.5 (7.1) | <0.001 | 0.63 (0.39–0.87) | ||
| EQ5D-VAS | Internet | 79.1 (13.6) | 83.3 (10.3) | 3.7 (10.9) | 0.001 | 0.30 | 0.34 (0.14–0.54) |
| Postal | 79.2 (14.0) | 81.8 (13.9) | 1.9 (13.0) | 0.13 | 0.15 (–0.04 to 0.34) |
*
Based on participants with complete data on both occasions
†
Based on paired t-tests
‡
Based on a mixed model analysis (ICIQ-UI SF, ICIQ-LUTS qol, and EQ5D-VAS), or a negative binomial regression (IEF)
§
Mean standardised difference.