Table 3.
Odds Ratio (OR) for early-onset dementia (EOD) and late-onset dementia (LOD) based on median (50th), tertiles, and fixed categories of nighttime luminance exposure (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) | 1.01 | (0.98–1.03) | 1.04 | (0.98–1.09) | |||
| Linear trend (10-unit increase) | 1.05 | (0.82–1.35) | 1.41 | (0.84–2.37) | |||
| LAN-Median | |||||||
| Below the median | 6.7 | 28/26 | 1.00 | – | 8/26 | 1.00 | – |
| Above the median | 37.8 | 30/28 | 1.10 | (0.50–2.40) | 26/28 | 3.20 | (0.57–17.80) |
| LAN-Tertiles | |||||||
| 1st tertile | 5.2 | 19/18 | 1.00 | – | 6/18 | 1.00 | – |
| 2nd tertile | 25.1 | 21/18 | 1.25 | (0.49–3.20) | 11/18 | 1.32 | (0.14–12.10) |
| 3rd tertile | 42.1 | 18/18 | 1.10 | (0.42–2.90) | 17/18 | 3.31 | (0.43–25.15) |
| LAN-Fixed categories | |||||||
| <10 | 4.6 | 15/15 | 1.00 | – | 5/15 | 1.00 | – |
| ≥10; <40 | 26.8 | 32/27 | 1.36 | (0.54–3.39) | 18/27 | 2.58 | (0.26–25.97) |
| ≥40 | 47.1 | 11/12 | 1.04 | (0.32–3.34) | 11/12 | 3.50 | (0.32–38.87) |