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Table 3 Evaluation of the quality of thick and thin blood smears before and after the training course

From: Impact of a training course on the quality of malaria diagnosis by microscopy in Angola

Classification Laboratory Thick blood smear Thin blood smear Slides without thin blood smear
Pre-course% Post-course% P value* Pre-course% Post-course% P value* Pre-course% Post-course%
  Bengo n = 200 n = 197   n = 200 n = 197    
Bad   63.5 55.8 0.102 87.0 75.1 0.003 58.0 20.8
Satisfactory   32.0 41.7 13.0 24.4
Good   4.5 2.5 0.0 0.5
  Benguela n = 107 n = 99   n = 107 n = 99    
Bad   32.7 9.0 <0.001 74.7 18.2 <0.001 0 0
Satisfactory   44.9 25.3 20.6 31.3
Good   22.4 65.7 4.7 50.5
  Luanda n = 168 n = 202   n = 168 n = 202    
Bad   64.8 68.9 0.724 79.1 80.2 0.073 7.1 3.0
Satisfactory   29.2 25.7 17.9 12.4
Good   6.0 5.4 3.0 7.4
  Total n = 475 n = 498   n = 475 n = 498    
Bad   57.0 51.8 0.003 81.5 65.8 <0.001 26.9 9.4
Satisfactory   33.9 31.9 16.4 20.9
Good   9.1 16.3 2.1 13.3
  1. *Pearson chi-square.
  2. Due to the small numbers the test was performed using only two categories: bad and satisfactory.