Table 5.
Number of patients (%) | P* | ||
---|---|---|---|
1990s (n = 1447) | 2010s (n = 3388) | ||
Season | |||
Spring | 101 (7.0) | 226 (6.7) | 0.695 |
Summer | 38 (2.6) | 119 (3.5) | 0.111 |
Fall | 52 (3.6) | 110 (3.2) | 0.539 |
Winter | 288 (19.9) | 659 (19.5) | 0.717 |
The change of seasons | 456 (31.5) | 1275 (37.6) | < 0.001 |
Throughout the year | 454 (31.4) | 918 (27.1) | 0.003 |
No answer | 48 (3.3) | 81 (2.4) | N/A |
Time | |||
Morning | 637 (44.0) | 1158 (34.2) | < 0.001 |
Daytime | 101 (7.0) | 255 (7.5) | 0.505 |
Evening | 211 (14.6) | 572 (16.9) | 0.050 |
Bedtime | 168 (11.6) | 412 (12.2) | 0.590 |
Throughout the day | 292 (20.2) | 900 (26.6) | < 0.001 |
No answer | 38 (2.6) | 91 (2.7) | N/A |
* Chi square test; N/A, not available