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Meta-regression analysis of LDL between smokers and non-smokers
| Covariate | N Studies | Coefficient (95% CI) | p value |
|---|---|---|---|
| Mean study age | 6 | 0.003 (−0.009, 0.014) | 0.052 |
| Study age criteria (under 22 or over 18) | 6 | 0.067 (−0.365, 0.499) | 0.691 |
| Type I or type II diabetes | 5 | −0.05 (−0.74, 0.63) | 0.825 |
| Male (percent) | 6 | 0.002 (−0.006, 0.010) | 0.522 |
| Study design | 6 | 0.062 (−0.483, 0.608) | 0.767 |
| Duration smoked | Not reported | N/A | N/A |
