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Table 3 Changes in consumption of ABHR and liquid soap 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

HHPC Coef. Ne Wey-West Std. Err. t P > |t| [95% CI]
_t −.721 1.094 −0.66 0.518 −3.019 1.577
_x2019m2 26.285 8.470 3.10 0.006 8.490 44.079
_x_t2019m2 4.571 1.446 3.16 0.005 1.533 7.609
_cons 158.496 8.127 19.50 0.000 141.420 175.571
  1. Note. HHPC hand hygiene product consumption, 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