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Table 2 Individual contribution of each variable in the decrease of heterogeneity, measured by meta-regression

From: Waist circumference and pulmonary function: a systematic review and meta-analysis

  Adjusted R 2 (%)
Variable FEV1 FVC
Sexa 54.8 85.7
Waist circumference measurement method 0.0 0.0
Age 0.0 0.0
Sample 0.0 0.0
Adjustment for height, weight and age 0.0 0.0
Study quality (modified Downs and Black scale) 0.0 0.0
Human Development Index 10.2 0.0
Geographical continent where study was carried out 7.7 0.0
  1. FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity. aFor this analysis, the study reporting measurements for both genders[5] was not included.