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Table 1 Comparison of the knowledge of NIs, standard precautions and hygiene with different study years

From: Knowledge of nosocomial infections, standard precautions, and source of information among physiotherapy undergraduates in Sri Lanka; an observational study

Testing variables

Grouping variable; study year (mean ± SD)

ANOVA test (p value)

1st year (n = 73)

2nd year (n = 92)

3rd year (n = 74)

4th year (n = 55)

Knowledge of NIs

67.4 ± 14.7

67.8 ± 17.3

65.7 ± 17.7

67.6 ± 17.8

0.856

Knowledge of standard precautions

84.9 ± 14.3

80.7 ± 16.9

84.6 ± 15.3

89.7 ± 6.8

0.004*

Knowledge of hand hygiene

66.8 ± 13.9

64.8 ± 17.3

67.7 ± 15.5

66.8 ± 14.1

0.657

Total knowledge

75.6 ± 9.5

73.0 ± 11.2

75.4 ± 10.2

77.9 ± 7.5

0.035*

  1. NIs: Nosocomial infections, n: sample size, SD: standard deviation
  2. *Variable with significant difference, checked at 5% significant level and 95% confidence interval