Table 2 Comparing the mean knowledge and performance scores between and within the study and control groups

Knowledge domains

Baseline

post

baseline

post

 Back ground knowledge

60.9 ± 21.7

95.2 ± 8.6

62.4 ± 23

64.2 ± 21

Z=-212 P=0.832

Z=-5.98 p=<0.001*

Z=-4.86 p=<0.001*

Z=-1.00 p=0.317

 Preparation of the patient

63.1 ± 19

82.6 ± 14.2

59.7 ± 17

61.1 ± 19.7

Z=-727 P=0.467

Z=-4.51 p=<0.001*

Z=-4.52 p=<0.001*

Z=-1.15 p=0.251

 Position of the patient & equipment

51.7± 15.2

78.6 ± 13.8

46.6 ± 16.2

48.8 ± 19.2

Z=-1.67 P=0.10

Z=-5.55 P=<0.001*

Z=-5.07 p=<0.001*

Z=-1.58 p=0.114

 Proper technique

41.2 ± 11.7

78.3 ± 13

43.1 ± 13.5

45 ± 14.1

Z=-0.46 p=0.645

Z=-6.47 p=<0.001*

Z=-5.20 p=<0.001*

Z=-1.41 p=0.157

 Hypertension diagnosis and documentation

69.6 ± 18.7

79.6 ± 21.5

67.8 ± 17.7

65.7 ± 20.1

Z=-0.60 p=0.550

Z=-2.77 p=0.006*

Z=-2.07 p=0.039*

Z=-1.06 p=0.291

 Total knowledge score

55.8 ± 11.6

81.8 ± 11.7

54.3 ± 12.3

55.3 ± 14.2

t=0.522 df= 68, p=0.604^±

Z=-5.96 p=<0.001*

Z=-5.17 p=<0.001*

t=-1.50 df= 34, p=0.143^±±

Performance domains

 Preparation of the patient

57.1 ± 23.5

57.9 ± 21

54.3 ± 20

52.9 ± 19.6

Z=-0.44 p=0.659

Z=-1.05 p=0.293

Z=-0.47 p=0.637

Z=-0.94 p=0.346

 Position of the patient & equipment

55.1 ± 18.4

58.5 ± 16.5

55.9 ± 15.2

56.4 ± 11.5

Z=-0.07 p=0.942

Z=-1.08 p=0.279

Z=-1.91 P=0.056

Z=-0.07= p=0.946

 Proper

technique

71.7 ± 19.9

73.7 ± 21

67.9 ± 20

69.2 ± 19.6

Z=-0.79 p=0.431

Z=-0.98 p=0.326

Z=-1.50 p=0.134

Z=-1.00 p=0.317

 Hypertension diagnosis & documentation

50 ± 21

55 ± 20.8

47.9 ± 25.9

48.6 ± 18.1

Z=-0.36 p=0.719

Z=-1.70 P=0.09

Z=-2.11 p=0.035*

Z=-0.26 p=0.796

 Total performance score

61.8 ± 15.6

64.08 ± 14

58.2 ± 14.1

58.8 ± 13.9

t=1.033 df= 68, p=0.305^±

t=1.590 df= 68, p=0.1 16^±

t=-1.703 df= 34, p=0.098^±±

t=-0.947 df= 34, p=0.350^±±