Table 1.

Temperature metrics used among reviewed studies.

Temperature Exposure	Temperature Metrics	Number of Studies	Reference
Daily temperature exposure	Maximum daily temperature	26	[10,13,14,18,32,38,39,40,41,42,43,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59]
	Minimum daily temperature	16	[10,13,18,39,41,43,50,51,52,53,54,55,56,57,58,59]
	Mean daily temperature	35	[15,16,18,32,41,46,51,52,53,54,55,56,57,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80]
Weekly temperature exposure	Maximumweekly temperature	3	[14,48,81]
	Mean weekly temperature	4	[15,19,82,83]
Monthly temperature exposure	Maximum monthly temperature	2	[84,85]
	Mean monthly temperature	10	[17,51,52,84,85,86,87,88,89,90]
Hourly temperature exposure	Hourly ambient temperature	3	[91,92,93]
Trimester-specific exposures	Trimester-specific temperature	3	[75,76,94]
Apparent temperature exposure	Apparent temperature index	1	[32]
	Daily maximum apparent temperature (MAT)	2	[11,33]
	Mean apparent daily temperature	5	[12,34,35,36,37]
	Mean apparent weekly temperature	1	[35]
	Mean apparent monthly temperature	1	[35]
	Universal apparent maximum temperature (UATmax)	1	[38]
Heatindex/Heatwave/ Extreme heatevents exposure	Wet-bulb globe temperature (WBGT)	1	[95]
	Dry temperature	2	[44,58]
	Wet temperature	1	[58]
	Mean heat index (HI)	1	[59]
	Heatwave/extreme heat events	12	[6,32,38,39,40,41,42,43,44,45,46,47]

Note: Some studies examined exposure effects using multiple temperature metrics.