Table 3 Subgroup analysis.
Micronutrient | No. of studies (k) | Estimate of pooled correlation coefficient | Heterogeneity and coefficient of determination | ||
|---|---|---|---|---|---|
r | 95% CI. | \(\tau ^{2}\) | r2 | ||
Vitamin D | |||||
South-East Asian Region (SEAR) | 8 | − 0.264 | [− 0.4927; − 0.0347] | 0.1035 | 6.97% |
Eastern Mediterranean Region (EMR) | 8 | − 0.152 | [− 0.2639; − 0.0402] | 0.0199 | 2.31% |
Western Pacific Region (WPR) | 7 | − 0.24 | [− 0.3607; − 0.1188] | 0.0237 | 5.76% |
European Region (EUR) | 4 | − 0.074 | [− 0.2099; 0.0619] | 0.0141 | 0.55% |
African Region (AR) | 3 | − 0.209 | [− 0.3529; − 0.0648] | 0.0102 | 4.37% |
Magnesium | |||||
South-East Asian Region (SEAR) | 9 | − 0.368 | [− 0.5371; − 0.1990] | 0.0602 | 13.54% |
Eastern Mediterranean Region (EMR) | 2 | − 0.262 | [− 0.3945; − 0.1284] | 0 | 7% |
European Region (EUR) | 2 | − 0.34 | [− 0.4778; − 0.2015] | 0 | 12% |
