Table 2.
Association between the maximum decrease in minimum temperature and incidence of a first stroke event, using 0-7 days before the events as case period (D0-D7) and 14-21 and 21-28 days before the event as the control periods (D14-D21 and D21-D28, respectively) (N=593).
| Adjusted OR (95%Cl)a for ≥2.4°C vs. <2.4°Cb decrease in minimum temperature | |
|---|---|
| All participants | 1.39(1.11-1.74) |
| Sex | |
| Women | 1.38(1.00-1.93) |
| Men | 1.40(1.04-1.89) |
| Age | |
| 25-44 years | 1.52(0.83-2.77) |
| 45-64 years | 1.51 (1.12-2.05) |
| ≥65 years | 1.16(0.78-1.74) |
| Stroke subtype | |
| Ischemic | 1.32(0.98-1.78) |
| Hemorrhagic | 1.50(1.07-2.09) |
| Hypertension | |
| Yes | 1.37(1.08-1.75) |
| No | 1.40(0.65-3.04) |
| Current smoking | |
| Yes | 0.98(0.47-2.04) |
| No | 1.42(1.12-1.80) |
| High serum cholesterol | |
| Yes | 0.79(0.42-1.47) |
| No | 1.53(1.20-1.96) |
| Diabetes | |
| Yes | 1.42(0.77-2.64) |
| No | 1.31(1.02-1.67) |
| Atrial fibrillationc | |
| Yes | 1.05(0.27-4.02) |
| No | 1.33(0.97-1.81) |
| Glasgow score at admission | |
| ≤10 | 0.94(0.58-1.91) |
| 11-15 | 1.45(0.93-2.26) |
| Vital status at 28-day post-event | |
| Alive | 1.38(1.05-1.81) |
| Dead | 1.49(1.00-2.11) |
a
OR adjusted for mean relative daily humidity (%) and mean precipitation (mm3) in each case/control period.
b
2.4°C corresponds to the median value of the distribution of the maximum day-to-day decrease in the minimum temperature in the case period.
c
Analysis conducted only for ischemic events.