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Table 4 Associations between mean maximal oxygen uptake (VO2 max) estimates (ml kg-1 min-1) and age, sex and infection status as predictor variables across eight schools. Data are derived from 934 primary schoolchildren from Port Elizabeth, South Africa, in early 2015

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

  Multiple linear regression
Explanatory variables Coefficient 95 % confidence interval P
A. lumbricoides (reference: not infected) -0.37 -1.23 to 0.50 0.403
Age (in years) -0.40 -0.68 to -0.13 0.004
Dual infected (reference: not infected) -0.42 -1.27 to 0.43 0.332
T. trichiura (reference: not infected) -0.46 -1.61 to 0.70 0.442
Sex (reference: male) -3.48 -3.95 to -3.01 < 0.001
  1. P-value of mixed-effects linear regression model P < 0.001, adjusted for clustering within schools