Table 2 Pittsburgh sleep quality index components according to migraine
From: Sleep disturbances and quality of life in Sub-Saharan African migraineurs
| Â | All N = 1,060 | Migraine | Â | |
|---|---|---|---|---|
| Â | Â | Yes N = 145 | No N = 915 | Â |
Characteristic | n (%) | n (%) | n (%) | P-value* |
Sleep duration (hours) | Â | Â | Â | Â |
 <5 | 106 (10.0) | 17 (11.7) | 89 (9.7) | 0.002 |
 5-5.9 | 126 (11.9) | 27 (18.6) | 99 (10.8) |  |
 6-6.9 | 227 (21.4) | 39 (26.9) | 188 (20.6) |  |
 ≥7 | 601 (56.7) | 62 (42.8) | 539 (58.9) |  |
Sleep latency (minutes) | Â | Â | Â | Â |
 ≤15 | 293 (27.6) | 32 (22.1) | 261 (28.5) | <0.001 |
 16-30 | 259 (24.4) | 23 (15.9) | 236 (25.8) |  |
 31-60 | 277 (26.1) | 41 (28.3) | 236 (25.8) |  |
 >60 | 231 (21.8) | 49 (33.8) | 182 (19.9) |  |
Day dysfunction due to sleep | Â | Â | Â | Â |
 Never | 443 (41.8) | 44 (30.3) | 399 (43.6) | 0.001 |
 < once a week | 383 (36.1) | 57 (39.3) | 326 (35.6) |  |
 1-2 times per week | 189 (17.8) | 31 (21.4) | 158 (17.3) |  |
 ≥3 times per week | 45 (4.2) | 13 (8.9) | 32 (3.5) |  |
Sleep efficiency (%) | Â | Â | Â | Â |
 ≥85 | 461 (43.5) | 45 (31.0) | 416 (45.5) | 0.012 |
 75-84 | 140 (13.2) | 23 (15.9) | 117 (12.8) |  |
 65-74 | 81 (7.6) | 15 (10.3) | 66 (7.2) |  |
 <65 | 378 (35.7) | 62 (42.8) | 316 (34.5) |  |
Sleep medicine during past month | Â | Â | Â | Â |
 Never | 1,024 (96.6) | 136 (93.8) | 888 (97.0) | 0.039 |
 < once a week | 7 (0.7) | 2 (1.4) | 5 (0.6) |  |
 1-2 times per week | 13 (1.2) | 5 (3.4) | 8 (0.9) |  |
 ≥3 times per week | 16 (1.5) | 2 (1.4) | 14 (1.5) |  |
Overall sleep quality | Â | Â | Â | Â |
 Good | 419 (39.8) | 35 (24.1) | 384 (42.0) | <0.001 |
 Poor | 641 (60.2) | 110 (75.9) | 531 (58.0) |  |