Table 2.

Combined effect of 1-degree increases in maximum wet-bulb globe temperature (WBGTmax) and squared WBGTmax (WBGTmax2) on daily activity (in steps) for different age groups and sex and during different seasons.

Subgroup	Combined effect of WBGTmax and WBGTmax2 at 20 °C on steps	Combined effect of WBGTmax and WBGTmax2 at 30 °C on steps	Estimate for WBGTmax	P value for WBGTmax	Estimate for WBGTmax2	P value for WBGTmax2
All participants (n=130)	+146	−83	606	.03	−12	.02
Older adults (aged ≥65 years; n=9)	+118	−60	475	.38	−9	.37
Middle-aged adults (aged 25-65 years; n=114)	+151	−93	638	.03	−12	.02
Young adults (aged <25 years; n=7)	+207	−10	641	.94	−11	.61
Male individuals (n=65)	+142	−88	601	.13	−11	.11
Female individuals (n=65)	+138	−67	547	.14	−10	.13
Rainiest month (August; n=79)	−5126	678	−16,734	.03	290	.02
Coolest month (January; n=122)	+370.34	−1047.06	3205.14	.35	−71	.36
Hottest month (April; n=99)	+304	−18	965	.43	−16	.45