Table 4.
Odds Ratio (OR) for early-onset Alzheimer's dementia (EOD) and late-onset Alzheimer's dementia (LOD) based on linear trend, median (50th), tertiles, and fixed categories of exposure to light at night (LAN) in nW/cm2/sr.
| LAN (nW/cm2/sr) | 50th | EOD |
LOD |
||||
|---|---|---|---|---|---|---|---|
| Cases/controls | OR | (95% CI) | Cases/Controls | OR | (95% CI) | ||
| Linear trend (1-unit increase) | 1.02 | (0.99–1.05) | 1.08 | (1.00–1.19) | |||
| Linear trend (10-unit increase) | 1.22 | (0.91–1.65) | 2.18 | (1.02–4.69) | |||
| LAN-Median | |||||||
| Below the median | 6.7 | 14/26 | 1.00 | – | 3/26 | 1.00 | – |
| Above the median | 37.8 | 18/28 | 1.30 | (0.52–3.29) | 22/28 | 5.87 | (0.59–58.14) |
| LAN-Tertiles | |||||||
| 1st tertile | 5.2 | 9/18 | 1.00 | – | 2/18 | 1.00 | – |
| 2nd tertile | 25.1 | 11/18 | 1.43 | (0.46–4.52) | 8/18 | 2.47 | (0.06–99.70) |
| 3rd tertile | 42.1 | 12/18 | 1.69 | (0.52–5.43) | 15/18 | 22.26 | (0.59–841.51) |
| LAN-Fixed categories | |||||||
| <10 | 4.6 | 7/15 | 1.00 | – | 2/15 | 1.00 | – |
| ≥10; <40 | 26.8 | 17/27 | 1.60 | (0.51–4.99) | 12/27 | 3.70 | (0.11–125.07) |
| ≥40 | 47.1 | 8/12 | 1.89 | (0.47–7.54) | 11/12 | 16.61 | (0.42-650.57) |