Table 2:

Multi-level linear mixed effects regression models examining predictors of current thirst and perceived pleasantness of drinking water

	Model 1.1	Model 1.2	Model 1.3	Model 1.4
	Current Thirst	Perceived pleasantness	Current Thirst	Perceived pleasantness
VARIABLES	Beta (SE)	Beta (SE)	Beta (SE)	Beta (SE)
Ambient temperature (per 10°F)	0.34 (0.36)	0.41 (0.27)	0.45 (0.39)	0.68**(0.30)
Birth season: Wet Season (dry season reference)	0.06 (0.20)	−0.31*(0.17)	2.19 (2.52)	4.23**(2.11)
Wet season by temperature interaction			−0.25 (0.30)	−0.54**(0.25)
Usg>1.020	0.24 (0.24)	0.12 (0.19)	0.23 (0.24)	0.10 (0.19)
Humidity (per 10%)	0.0001 (0.18)	0.02 (0.13)	0.01 (0.18)	0.04 (0.13)
Age (years)	0.01* (0.01)	−0.004 (0.01)	0.01* (0.01)	−0.01 (0.01)
Fat-Free Mass	0.001 (0.03)	−0.02 (0.02)	0.0003 (0.03)	−0.02 (0.02)
Male (female reference)	0.08 (0.35)	0.42 (0.29)	0.10 (0.35)	0.45 (0.29)
Time of day	0.02 (0.05)	−0.09** (0.04)	0.02 (0.05)	−0.09** (0.04)
Kenya (Bolivia Reference)	−0.72 (0.62)	−2.29*** (0.46)	−0.72 (0.61)	−2.27*** (0.46)
Observations	607	607	607	607

Standard errors in parentheses

^***p<0.01

^**p<0.05

^*p<0.1

Note: 3-level mixed-effects model, with random effects (intercepts) for each participant nested 356 households and within a random effect for 11 communities of residence. Results for Models 1.1 and 1.2 indicate the association between current thirst and perceived pleasantness of drinking water in relation to ambient temperature, season of birth, hydration status, and controlling for covariates listed. Models 1.3 and 1.4 repeat the models along with an interaction between ambient temperature and birth season.