Comparison of two electronic hand hygiene monitoring systems in promoting hand hygiene of healthcare workers in the intensive care unit

Table 1 The variation of hand hygiene compliance rate in the three stages obtained by the direct observation method

HHCR	Coef.	Ne Wey-West Std. Err.	t	P > \|t\|	[95% CI]
_t	.250	.1060	2.36	0.026	.033	.467
_x2018m3	1.667	1.885	0.88	0.384	−2.194	5.528
_x_t2018m3	−.115	.254	−0.45	0.654	−.635	.405
_x2019m2	12.324	3.152	3.91	0.001	5.867	18.780
_x_t2019m2	1.242	.440	2.82	0.009	.341	2.144
_cons	59.281	.742	79.89	0.000	57.761	60.801

Note. HHCR hand hygiene compliance rate, Coef coefficient, Std. Err. standard error, CI confidence interval, _t time since the start of the study, m month, _x(trperiod) dummy variable which representing the intervention periods (preintervention periods 0, otherwise 1), _x_t(trperiod) the interaction of _x and _t; _cons, constant

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