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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