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Table 3 Results of linear model of predictors of physical activity parameters among Tanzanian school children (N = 223)*

From: Low leptin levels are associated with elevated physical activity among lean school children in rural Tanzania

Outcome   B 95% CI SE B β p
MVPA Model 1aa
Constant 152.24 140.52, 163.96 5.95    < .001
Leptin -30.26 -40.38, -20.14 5.14 -.37  < .001
Model 1bb
Constant 312.26 214.41, 410.11 49.65    < .001
Leptin -18.06 -29.66, -6.47 5.88 -.22 .002
Male sex 23.77 13.35, 34.19 5.29 .30  < .001
BMI z-score 5.62 -0.37, 11.62 3.04 .12 .066
Walking time to get to school 0.64 0.36, 0.93 0.14 .25  < .001
Ambient temperature -8.37 -12.77, -3.94 2.25 -.22  < .001
   B 95% CI SE B β p
Total counts Model 2ac
Constant 1,297,387.1 1,234,793.8, 1,359,980.4 31,761.1    < .001
Leptin -129,893.9 -183,973.0, -75,814.7 27,440.8 -.30  < .001
Model 2bd
Constant 247,033.8 1,957,655.7, 3,036,412.0 273,663.2    < .001
Leptin -90,255.7 -154,146.1, -26,365.3 32,415.9 -.21 .006
Male sex 67,404.9 9969.2, 124,840.6 29,141.0 .16 .022
BMI z-score 32,110.3 -932.9, 65,153.4 16,765.1 .13 .057
Walking time to get to school 2610.2 1045.3, 4175.1 794.0 .20 .001
Ambient temperature -56,462.3 -80,858.4, -32,066.2 12,377.8 -.28  < .001
  1. B: unstandardized regression coefficient, β: standardized regression coefficient;
  2. *Model 1a and 2a unadjusted; Model 1b and 2b hierarchical inclusion of other predictors showing significance after inclusion in Model 1/1a;
  3. aR2=.14; bR2=.32, adjusted R2=.31 ΔR2=.19, cR2=.09, dR2=.24, ΔR2=.15, adjusted R2 =.23 (all p<.001), BMI body mass index.