Table 2.

Relationships of considered factors with the differences between iThermonitor temperatures and mercury thermometer temperatures*

Factor considered	B	95% CI	Bs	t	P value
Reading of mercury thermometers	−0.295	−0.315–−0.275	−0.433	−28.737	0.000
Sex (woman vs man)	−0.090	−0.111–−0.069	−0.126	−8.453	0.000
BMI (kg/m2)	−0.013	−0.016–−0.009	−0.111	−7.399	0.000
Age (year)	0.001	0.000–0.001	0.028	1.870	0.062
Length of wearing (day)	0.001	−0.003–0.003	−0.002	−0.130	0.897
Mobility (bedridden vs off-bed activities)	−0.020	−0.075–0.034	−0.011	−0.728	0.467
Sweating in the axilla	0.117	−0.005–0.238	0.028	1.884	0.060
Consciousness (sleep vs awake)	−0.021	−0.110–0.067	−0.007	−0.466	0.641

Estimated by multiple linear regression analysis with the dependent variable as the difference of iThermonitor temperatures minus mercury thermometer temperatures, with all the factors entered into the regression. B, linear regression coefficient. 95% CI, 95% CI for linear regression coefficient. Bs, standardised coefficient.

*Squared variation coefficient R²=0.215, F=123.474, P<0.001.

BMI, body mass index.