Table 1.

Hazards ratios and 95% confidence intervals for associations between insolation and maximum temperature averages for the year previous to in-home interview with stroke incidence, 351 stroke events (n=16,606)

Model	Below median	Quartile of Maximum Temperature
	Insolation (n=8275)	1st (n=4142)	2nd (n=4212)	3rd (n=4210)	4th (n=4042)
Insolation Only*	1.44 (1.16, 1.79)	--	--	--	--
Temperature Only*	--	1.86 (1.39, 2.52)	Ref	1.22 (0.88, 1.69)	1.36 (0.99, 1.89)
Insolation and Temperature†	1.73 (1.25, 2.41)	1.68 (1.25, 2.29)	Ref	1.51 (1.07, 2.14)	2.05 (1.36, 3.11)
Adjusted Model‡	1.59 (1.14, 2.23)	1.49 (1.05, 2.14)	Ref	1.73 (1.19, 2.51)	1.95 (1.29, 2.96)
Mediation Model§	1.61 (1.15, 2.26)	1.42 (1.00, 2.04)	Ref	1.70 (1.17, 2.46)	1.92 (1.27, 2.92)

Bold values indicated variables with chi-square p-values<0.05

^*Insolation Only and Temperature Only models each contain only a measure of insolation or temperature with stroke of any subtype as outcome

^†Insolation and Temperature model contains both measures of insolation or temperature with stroke of any subtype as outcome

^‡Adjusted Model adds age, race, gender, rurality, education, income, neighborhood poverty, vitamin D intake, exercise, TV/computer time, medication use (aspirin, statins or anti-hypertensives), alcohol, smoking, depressive symptoms, Physical Component Summary score, and body mass index to the Insolation and Temperature Model, and controls for region through stratification

^§Mediation Model adds systolic blood pressure, cholesterol, diabetes, atrial fibrillation, previous transient ischemic attack, and presence of stroke symptoms without self-reported stroke at baseline to the Adjusted Model