Skip to main content

Table 1 Ascaris lumbricoides and Trichuris trichiura prevalence and infection intensity (as mean of duplicate Kato-Katz thick smears) among 934 primary schoolchildren from Port Elizabeth, South Africa, in early 2015, stratified by sex and age

From: Intestinal parasites, growth and physical fitness of schoolchildren in poor neighbourhoods of Port Elizabeth, South Africa: a cross-sectional survey

   Sex   Age (years)   
Male (n = 472) Female (n = 462)   9 (n = 282) 10 (n = 375) 11 (n = 216) 12 (n = 61)  
n (%) n (%) P a n (%) n (%) n (%) n (%) P a
A. lumbricoides Prevalenceb 134 (28) 114 (25) 0.305 43 (15) 108 (29) 74 (34) 23 (38) 0.691
Infection intensityc         
Mean EPGd (95 % CI) 10,866 (7907–14,934) 9256 (6633–12,915) 0.333 8411 (4357–16,238) 9038 (6309–12,948) 10,899 (7306–16,258) 18,630 (11,725–29,602) 0.252
Light (1–4999) 36 (8) 36 (8)   10 (4) 41 (11) 18 (8) 3 (5)  
Moderate (5000–49,999) 67 (14) 58 (13)   26 (9) 43 (11) 39 (18) 17 (28)  
Heavy (≥50,000) 31 (7) 20 (4)   7 (2) 24 (6) 17 (8) 3 (5)  
T. trichiura Prevalencee 114 (24) 93 (20) 0.065 31 (11) 88 (23) 68 (32) 20 (33) 0.208
Infection intensityc         
Mean EPGd (95 % CI) 757 (572–1002) 747 (557–1002) 0.950 737 (471–1155) 640 (467–877) 940 (661–1336) 744 (322–1723) 0.446
Light (1–999) 65 (14) 55 (12)   16 (6) 55 (15) 36 (17) 13 (21)  
Moderate (1000–9999) 44 (9) 35 (8)   15 (5) 32 (9) 27 (13) 5 (8)  
Heavy (≥10,000) 5 (1) 3 (1)   0 (0) 1 (0.3) 5 (2) 2 (3)  
  1. aAll P-values are calculated using either mixed linear or mixed logistic regression, as appropriate, adjusted for clustering of schools
  2. b A. lumbricoides prevalence irrespective of co-infections
  3. c Stratified according to WHO guidelines
  4. d Geometric mean among the infected (95 % confidence interval)
  5. e T. trichiura prevalence irrespective of co-infections