Table 2 Results of multivariate logistic regression models

Male

Reference

Reference

Female

2.70 (1.86–3.95)

< 0.001

2.60 (1.80–3.78)

< 0.001

Others

Reference

Nursing students

1.32 (0.61–2.82)

0.476

-

-

Step 4

Missing

Reference

-

Reference

-

Completely correct

1.27 (0.68–2.35)

0.449

1.41 (0.80–2.47)

0.233

Partially correct

5.65 (1.34–31.03)

0.027

6.23 (1.55–32.99)

0.017

Completely wrong

1.00 (0.54–1.81)

0.990

1.15 (0.66–1.99)

0.623

Step 5

Missing

Reference

-

-

-

Completely correct

1.57 (0.63–3.93)

0.330

-

-

Partially correct

1.73 (0.45–6.99)

0.433

-

-

Completely wrong

1.41 (0.58–3.49)

0.450

-

-

Step 6

Missing

Reference

-

-

-

Completely correct

0.75 (0.34–1.66)

0.485

-

-

Partially correct

1.58 (0.55–4.63)

0.399

-

-

Completely wrong

0.69 (0.30–1.56)

0.382

-

-

Step 7

Missing

Reference

-

Reference

-

Completely correct

2.35 (0.77–7.38)

0.134

2.77 (1.12–7.23)

0.031

Partially correct

4.29 (1.05–18.8)

0.046

5.89 (1.65–23.29)

0.008

Completely wrong

2.23 (0.72–7.08)

0.165

2.42 (0.93–6.66)

0.076

Step 1 correct duration

0.94 (0.90–0.99)

0.030

0.95 (0.90–1.00)

0.039

Rubbing hands when rinsing

2.04 (1.27–3.31)

0.003

2.00 (1.25–3.23)

0.004

Rinsing duration

1.02 (1.01–1.04)

0.002

1.02 (1.01–1.04)

0.002

One hand washing attempt

0.27 (0.14–0.48)

< 0.001

0.25 (0.14–0.46)

< 0.001