Table 5 Internal consistency for the instruments of the PGQ
|  | Number of women with missing data | All women, mean (SD) | Cronbach’s alpha |
|---|---|---|---|
PGQ total | Â | Â | 0.93 |
PGQ activity | Â | Â | 0.92 |
1. Dress yourself | 0 | 0.55(0.81) | Â |
2. Stand for less than 10Â min | 0 | 0.43(0.70) | Â |
3. Stand for more than 60Â min | 0 | 1.72(0.95) | Â |
4. Bend down | 0 | 1.60(0.89) | Â |
5. Sit for less than 10Â min | 0 | 0.38(0.77) | Â |
6. Sit for more than 60Â min | 0 | 1.50(0.97) | Â |
7. Walk for less than 10Â min | 0 | 0.59(0.78) | Â |
8. Walk for more than 60Â min | 0 | 1.79(0.91) | Â |
9. Climb stairs | 0 | 1.29(0.90) | Â |
10. Do housework | 0 | 1.22(0.84) | Â |
11. Carry light objects | 0 | 0.78(0.76) | Â |
12. Carry heavy objects | 0 | 2.10(0.85) | Â |
13. Get up/sit down | 0 | 1.10(0.96) | Â |
14. Push a shopping cart | 0 | 0.41(0.67) | Â |
15. Run | 0 | 1.72(1.01) | Â |
16. Carry out sporting activities | 18 | 1.84(.092) | Â |
17. Lie down | 0 | 0.98(0.98) | Â |
18. Roll over in bed | 0 | 1.72(1.06) | Â |
19. Have a normal sex life | 34 | 1.05(0.97) | Â |
20. Push something with 1 foot | 0 | 1.14(0.86) | Â |
PGQ symptom | Â | Â | 0.77 |
21. Pain in the morning | 0 | 1.12(0.77) | Â |
22. Pain in the evening | 0 | 1.65(0.72) | Â |
23. Has your leg/have your legs given way? | 0 | 0.83(0.74) | Â |
24. Do you do things more slowly? | 0 | 1.52(0.75) | Â |
25. Is your sleep interrupted? | 0 | 0.85(0.81) | Â |