Table 2 Nurses’ knowledge and attitude scores per their demographic characteristics

Overall

73.2 [68.3–78.0]

75.0 [62.0–87.5]

72.7 [66.7–78.8]

41.0 [37.0–44.0]

Hospital

< 0.001^†

0.450^†

< 0.001^†

0.002^†

 1

70.7 [65.9–78.0]

75.0 [62.5–78.1]

71.2 [66.7–75.8]

40.0 [37.0–44.0]

 2

78.0 [70.7–82.9]

75.0 [62.5–87.5]

78.8 [69.7–81.8]

41.0 [36.0–44.0]

 3

73.2 [68.3–78.0]

75.0 [62.5–87.5]

72.7 [69.7–78.8]

40.0 [38.0–43.0]

 4

73.2 [68.3–78.0]

75.0 [62.5–75.0]

72.7 [66.7–78.8]

40.0 [36.0–42.0]

 5

73.2 [68.3–78.0]

75.0 [62.5–87.5]

72.7 [66.7–78.8]

42.0 [38.8–44.0]

 6

73.2 [68.3–78.0]

75.0 [62.5–75.0]

72.7 [66.7–78.8]

43.0 [38.0–46.0]

 7

75.6 [64.6–80.5]

68.7 [62.5–87.5]

75.8 [64.4–81.1]

40.5 [36.8–45.5]

Sex

0.004*

0.034*

0.003*

0.292*

 Male

73.2 [65.9–78.0]

75.0 [62.5–75.0]

72.7 [66.7–75.8]

41.0 [37.0–45.0]

 Female

73.2 [68.3–80.5]

75.0 [62.5–87.5]

72.7 [69.7–78.8]

40.0 [37.0–43.0]

Highest education level

0.647^†

0.405^†

0.241^†

< 0.001^†

 Diploma in Nursing

73.2 [65.9–78.0]

75.0 [62.5–75.0]

75.8 [66.7–78.8]

40.0 [36.0–42.8]

 Bachelor of Nursing

73.2 [68.3–78.0]

75.0 [62.5–87.5]

72.7 [66.7–78.8]

41.0 [37.0–44.0]

 Post graduate diploma

73.2 [69.5–78.0]

75.0 [62.5–87.5]

72.7 [69.7–78.8]

40.0 [38.5–43.0]

 Master of Nursing

75.6 [70.7–80.5]

75.0 [62.5–84.4]

78.8 [68.2–81.8]

45.5 [45.0–48.5]

Age in years

0.001^†

0.381^†

0.001^†

0.902^†

 20–29

70.7 [64.3–75.6]

75.0 [62.5–81.3]

69.7 [66.7–75.8]

40.0 [36.5–43.5]

 30–39

73.2 [68.3–78.0]

75.0 [62.5–87.5]

72.7 [66.7–78.8]

41.0 [37.0–44.0]

 40–49

75.6 [68.3–80.5]

75.0 [62.5–87.5]

75.8 [69.7–81.8]

40.5 [37.8–43.0]

 50–59

76.8 [70.7–81.1]

75.0 [62.5–87.5]

77.3 [69.7–81.8]

41.0 [36.0–45.0]

 60–69

80.5 [69.5–81.7]

75.0 [68.8–100]

78.8 [68.2–80.3]

40.0 [39.0–41.5]

Experience in years

0.007^†

0.169^†

0.007^†

0.890^†

 0–2

70.7 [63.4–78.0]

75.0 [62.5–87.5]

69.7 [63.6–75.8]

39.0 [36.0–43.0]

 3–5

73.2 [66.5–77.4]

75.0 [62.5–84.4]

72.7 [66.7–78.0]

41.0 [37.0–44.0]

 6–10

70.7 [65.9–78.0]

75.0 [62.5–75.0]

72.7 [66.7–78.8]

40.0 [35.0–44.0]

 11–15

73.2 [65.9–78.0]

75.0 [62.5–87.5]

72.7 [66.7–78.8]

41.0 [38.0–44.0]

 >15

75.6 [68.3–80.5]

75.0 [62.5–87.5]

75.8 [69.7–81.8]

41.0 [37.0–43.0]

Ever received formal training on PI prevention

< 0.001*

0.038*

< 0.001*

0.807*

 No

73.1 [65.9–78.0]

75.0 [62.5–75.0]

72.7 [66.7–78.8]

40.0 [37.0–43.0]

 Yes

74.5 [69.3–80.5]

75.0 [62.5–87.5]

75.8 [69.7–81.8]

41.0 [37.0–44.0]

Location of last training

< 0.001*

0.229*

< 0.001*

0.072*

 Inside Kuwait

75.6 [70.7–80.5]

75.0 [62.5–87.5]

75.8 [69.7–81.8]

41.0 [37.0–44.0]

 Outside Kuwait

72.0 [65.9–75.6]

75.0 [62.5–87.5]

72.7 [63.6–75.8]

40.0 [35.8–44.3]

Years since last training

0.013*

0.582*

0.007*

0.732*

 ≤3

75.6 [70.7–80.5]

75.0 [62.5–87.5]

75.8 [69.7–81.8]

41.0 [37.0–44.0]

 >3

73.2 [68.3–78.0]

75.0 [62.5–87.5]

72.7 [66.7–78.8]

41.0 [37.0–44.0]

Nurses’ knowledge score categories

< 0.001^†

 Unsatisfactory (32.9%)

38.0 [34.0–42.0]

 Satisfactory (44.6%)

41.0 [38.0–44.0]

 Good (20.8%)

42.0 [39.0–45.0]

 Very good (1.7%)

48.5 [45.3–49.0]