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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.