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Table 2 The variation of hand hygiene events per bed day in stages 1 and 2

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

HHEs Coef. Ne Wey-West Std. Err. t P > |t| [95% CI]
_t .015 .331 0.04 0.965 −.681 .710
_x2019m2 13.565 3.940 3.44 0.003 5.287 21.843
_x_t2019m2 1.829 .591 3.09 0.006 .587 3.071
_cons 76.565 2.368 32.33 0.000 71.589 81.540
  1. Note. HHEs hand hygiene events, 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