Table 2 Mean Age of Onset by Latitude Range (N = 6972)
From: Exploratory study of ultraviolet B (UVB) radiation and age of onset of bipolar disorder
Latitude Range North + South | Mean Age of Onset | N | Standard Deviation |
|---|---|---|---|
0–9 | 26.6 | 511 | 9.97 |
10–19 | 24.3 | 797 | 9.49 |
20–29 | 24.8 | 375 | 11.39 |
30–39 | 25.5 | 2023 | 10.38 |
40–49 | 26.6 | 2368 | 10.59 |
50–59 | 24.4 | 682 | 10.16 |
60–69 | 22.7 | 216 | 11.29 |
Total | 25.6 | 6972 | 10.43 |