Sample size calculations from various variables
| No | Variables | σ | ρ | µ1–µ2 | Deff | Non-respondent (30%) | Attrition rate (20%) |
| 1 | UI Severity ICIQ-UI SF64 | 2.56 | 0.05 | 2.52 | 4.2 | 88 | 212 |
| 2 | Quality of Life ICIQLuts Qol64 | 4.95 | 0.05 | 3.71 | 4.2 | 153 | 368 |
| 3 | Knowledge PFMT65 | 3.4* | 0.05 | 4.67 | 4.2 | 45 | 108 |
| 4 | Attitude PFMT65 | 3.7* | 0.05 | 3.77 | 4.2 | 82 | 198 |
| 5 | Practices PFMT65 | 1.73* | 0.05 | 3.45 | 4.2 | 22 | 52 |
*SD using Lemeshow et al66 calculation.
ICIQ-UI SF, International Consultation on Incontinence Questionnaire-Urinary Incontinence-Short Form; PFMT, pelvic floor muscle training; QoL, quality of life.