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Table 4 Positive blood cultures per 1000 patient-days by study group and by study period

From: A multimodal intervention to improve hand hygiene compliance in peripheral wards of a tertiary care university centre: a cluster randomised controlled trial

Study group

Baseline period

Intervention period

Follow-up period

Comparison

 

Number of isolates

Mean rate/ 1000 patient-days (CI95)

Number of isolates

Mean rate/ 1000 patient-days (CI95)

Number of isolates

Mean rate/ 1000 patient-days (CI95)

IRR (CI95), p-value

Intervention vs. Baseline

IRR (CI95), p-value

Follow-up vs. Baseline

IRR (CI95), p-value

Follow-up vs. Intervention

Intervention group

161

1.42 (1.21, 1.66)

172

1.46 (1.25, 1.70)

53

1.78 (1.33, 2.32)

1.03 (0.83, 1.27), 0.80

1.25 (0.91, 1.69), 0.17

1.22 (0.88, 1.64), 0.22

Control group

226

1.98 (1.73, 2.26)

297

2.54 (2.26, 2.85)

59

2.08 (1.58, 2.68)

1.28 (1.08, 1.53), < 0.01

1.05 (0.78, 1.39), 0.74

0.82 (0.61, 1.07), 0.15

  1. Abbreviations: IRR incidence rate ratio, CI95 95% confidence interval