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Table 3 Slide characteristics before and after intervention with significance of difference comparing each group

From: Effects of modifying the World Health Organization standard operating procedures for malaria microscopy to improve surveillance in resource poor settings

Characteristic

IL

CL

Significance of differences (p-values)

 

Pre (%)

Post (%)

Pre (%)

Post (%)

Baseline comparison of two groups

Pre and post intervention comparison in CL

Pre and post intervention comparison in IL

Post intervention comparison between two groups

Streak formation in thin smear

29.4

5

28.4

26.7

0.83

0.7

<0.001

<0.001

Thick smears with insufficient thickness

18.3

1.5

18.2

17.1

0.97

0.79

<0.001

<0.001

Overall quality of thick smear

76.11

98

75.6

75.2

0.9

0.94

<0.001

<0.001

Overall quality of thin smears

81.67

87

80.7

81.9

0.81

0.76

0.15

0.16

Quality of slides with both thick & thin smears

60

87

61.4

63.3

0.79

0.69

<0.001

<0.001

  1. IL: Intervention laboratories.
  2. CL: Control Laboratories.