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Table 3 Univariable meta-regression model

From: The impact of vitamin D food fortification and health outcomes in children: a systematic review and meta-regression

Trial level covariate Estimate 95% CI P value Tau2 R2 I2
Dose, IU 0.02 − 0.0, 0.5 0.02 * 115.7 20.5 96.1
Baseline 25(OH)D concentration, nmol/L − 0.09 − 0.4, 0.2 0.54 142.7 0.0 96.3
Latitude 0.26 − 0.2, 0.7 0.23 142.2 2.1 96.1
  1. Tau2 unexplained between-study variance, R2 proportion of total between-study variance explained by the model, I2 between studies variance, *Statistically significant