Table 4.
Summary of the findings of the meta-analyses
| Group/subgroup | Studies | n | Effect size (z score) [95 CI] | Correlation coefficient [95% CI] | P | I2 |
|---|---|---|---|---|---|---|
| Overall | 37 | 14832 | 0.352 [0.336, 0.368] | 0.336 [0.327, 0.345] | P < 0.0001 | 96.7% |
| Healthy individuals | 12 | 266 | 0.316 [0.297, 0.334] | 0.311 [0.292, 0.321] | P < 0.0001 | 97.6% |
| Population surveys | 10 | 10979 | 0.319 [0.300, 0.337] | 0.310 [0.291, 0.327] | P < 0.0001 | 98.1% |
| Patients | 27 | 3587 | 0.480 [0.445, 0.514] | 0.446 [0.422, 0.470] | P < 0.0001 | 95.8% |
| CVD/CVD risk patients | 21 | 2861 | 0.518 [0.481, 0.555] | 0.478 [0.446, 0.508] | P < 0.0001 | 96.4% |
| Non-CVD risk patients | 6 | 726 | 0.341 [0.266, 0.415] | 0.327 [0.264, 0.388] | P < 0.0001 | 85.1% |