Table 1.
Comparison of the prevalence of various storage symptoms in the twins grouped by age and gender
| Symptom | Sex | Age, yr | ||||||
|---|---|---|---|---|---|---|---|---|
| 20–2 5 |
26–3 0 |
31–3 5 |
36–4 0 |
41–4 6 |
Total | Difference between age groups |
||
| Micturation frequency* n (%) |
Men | 224 (10.8) |
225 (13.0) |
218 (11.6) |
217 (10.6) |
273 (11.2) |
1157/10 184 (11.4) |
p = 0.16 |
| Women | 524 (20.1) |
470 (20.6) |
424 (17.6) |
388 (15.3) |
473 (15.7) |
2 279/12850 (17.7) |
p < 0.0001† |
|
| Nocturia* n (%) |
Men | 611 (29.4) |
658 (38.1) |
766 (40.6) |
905 (44.0) |
1160 (47.7) |
4100/10184 (40.3) |
p < 0.0001‡ |
| Women | 1 397 (53.6) |
1 446 (63.2) |
1 544 (64.2) |
1 586 (62.6) |
1 908 (63.1) |
7 881/12850 (61.3) |
p < 0.0001§ |
|
| Nocturia ≥2/night n (%) |
Men | 129 (6.2) |
152 (8.8) |
160 (8.5) |
193 (9.4) |
289 (11.9) |
923/10184 (9.1) |
p < 0.0001‡ |
| Women | 495 (19.0) |
587 (25.7) |
624 (26.0) |
614 (24.2) |
695 (22.9) |
3015/12850 (23.5) |
p < 0.0001§ |
|
| Micturitions/24 h (X ± SD) |
Men n = 10 184 |
5.0 ± 2.6 |
5.4 ± 2.9 |
5.4 ± 2.8 |
5.7 ± 2.6 |
5.7 ± 2.8 |
5.4 ± 2.7 |
p < 0.0001‡ |
| Women n = 12 850 |
6.3 ± 3.3 |
6.6 ± 3.2 |
6.8 ± 3.3 |
6.6 ± 3.0 |
6.6 ± 2.9 |
6.6 ± 3.1 |
p < 0.0001§ |
|
| ≥8 micturitions/24 h n (%) |
Men | 243 (11.7) |
273 (15.8) |
277 (14.7) |
334 (16.2) |
435 (17.9) |
1562/10184 (15.3) |
p < 0.0001‡ |
| Women | 796 (26.3) |
649 (28.4) |
697 (29.0) |
703 (27.8) |
796 (26.3) |
3458/12850 (26.9) |
p < 0.001§ | |
SD = standard deviation.
*
Defined according to International Continence Society definition 2002.
†
Decreasing prevalence with increasing age.
‡
Increasing prevalence with increasing age.
§
Lowest prevalence in youngest age group; peak in 31–35 yr of age group.