Table 4.

Multiple logistic regression analysis with as dependent variable ‘change in COVID-19 status from negative to positive status or a positive suspect case in period 2′.

Independent variables from period 1	OR 95% CI
	B (S.E.)	OR	Lower	Upper
working experience in healthcare (decades)	−0.268 (0.099)	0.77	0.63	0.93
sufficient PPE training	−0.844 (0.227)	0.43	0.28	0.67

multiple logistic regression model fitted using backward stepwise selection; Nagelkerke R²: 0.092; p-model: <0.001; n = 344.

excluded variables: organization (hospital); occupation (nurse); personal protective equipment sufficient availability; correct personal protective equipment selection; sufficient cohorting; sufficient screening availability.

PPE = personal protective equipment.