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Table 1 Prevalences (pooled results from duplicate Kato-Katz and one FLOTAC test), and Kato-Katz-derived infection intensities of A. lumbricoides, hookworm and T. trichiura among 268 schoolchildren from two schools in Yunnan province, P.R. China, stratified by school, sex and age.

From: Self-rated quality of life and school performance in relation to helminth infections: case study from Yunnan, People's Republic of China

  Obs. A. lumbricoides Hookworm T. trichiura
   N % P -value N % P -value N % P -value
Total 268 125 46.6   160 59.7   134 50.0  
School           
   Bulangshan 170 116 68.2 < 0.001 129 75.9 < 0.001 119 70.0 < 0.001
   Pu'er 98 9 9.2   31 31.6   15 15.3  
Sex           
   Female 123 49 39.8 0.040 63 51.2 0.009 52 42.3 0.020
   Male 145 76 60.8   97 66.9   82 56.5  
Age (years)           
   12-13 101 41 40.6 0.018 53 52.5 < 0.001 42 41.6 0.001
   13-14 108 47 43.5   55 50.9   50 46.3  
   > 14 59 37 62.7   52 88.1   42 71.2  
Infection intensitya           
   Bulangshan           
Mean; 95% CI   6815 5069; 8563   600 367; 832   82 63; 120  
No   72 42.4   55 32.4   52 30.6  
Light   36 21.2   102 60.0   86 50.6  
Moderate   58 34.1   7 4.1   30 17.6  
Heavy   4 2.3   6 3.5   2 1.2  
   Pu'er           
Mean; 95% CI   235 67; 537   175 74; 276   20 15; 33  
No   90 91.8   71 72.5   83 84.7  
Light   6 6.1   25 25.5   14.3 14  
Moderate   2 2.1   2 2.0   1 1.0  
Heavy   0 0   0 0   0 0  
  1. All P-values calculated using χ2 or Fisher's exact test as appropriate. a Stratification according to WHO [21].