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Table 6 Multiple linear regression models with number of 20-m laps completed as outcome and age, sex, stunting and infection status as explanatory variables. Data is derived from 69 Bulang primary school children from Yunnan province, P.R. China, in mid-2011.

From: Soil-transmitted helminth infections and physical fitness in school-aged Bulang children in southwest China: results from a cross-sectional survey

(II)

Multiple linear regressiona

Explanatory variables

Coefficient

95% confidence interval

P - value

Age (in years)

0.86

-0.07 to 1.79

0.069

Sex (reference: male)

-9.89

-13.08 to -6.70

< 0.001

Stunting (reference: not stunted)

-5.32

-8.48 to -2.17

0.001

A. lumbricoides (reference: not infected)

-2.83

-6.12 to 0.46

0.090

T. trichiura (reference: not infected)

-6.14

-10.29 to -1.99

0.004

  1. a Only explanatory variables that have showed significant difference in the descriptive statistics were included.
  2. Key indicators of model: F (5, 63) = 16.94; P < 0.001; R-squared = 0.57