Table 2

Meta-regression analyses for BMI

Coef.SEtp>|t|(95% CI)
Age0.01680.01181.420.169−0.007 to 0.0413
Gender (males)−0.00250.0029−0.850.407−0.0087 to 0.0036
Baseline BMI0.03150.02041.550.136−0.0106 to 0.0737
Baseline weight0.00990.00452.180.0400.0004 to 0.0193
OSA severity−0.00100.0044−0.220.825−0.0102 to 0.0082
CPAP compliance−0.08200.0572−1.430.165−0.2004 to 0.0364
Use of sham CPAP0.03670.10010.370.717−0.1703 to 0.2439
Study duration−0.00150.0032−0.480.635−0.0082 to 0.0051
Crossover design0.19830.16491.200.241−0.1428 to 0.5395
Study origin (Western/Eastern)−0.03560.1395−0.260.801−0.3241 to 0.2529
Dietary counselling0.13220.10481.260.220−0.0845 to 0.3491
Physical activity counselling0.23610.12331.910.068−0.0189 to 0.4912
  • The coefficient of the meta-regression represents the value of increase (positive value) or decrease (negative value) of the BMI per increase of one unit of the predictor variable.

  • BMI, body mass index; OSA, obstructive sleep apnoea.