Table 7 Meta-regression analysis for difference in HDL between smokers and non-smokers
Covariate | N studies | Coefficient (95% CI) | p value |
|---|---|---|---|
Mean study age | 6 | −0.002 (−0.004, 0.000) | 0.052 |
Study age criteria (under 22 or over 18) | 6 | 0.019 (−0.144, 0.016) | 0.697 |
Type I or Type II diabetes | 5 | −0.08 (−0.19, 0.04) | 0.119 |
Male (percent) | 6 | −0.001 (−0.003, 0.000) | 0.053 |
Study design | 6 | −0.035 (−0.123, 0.193) | 0.569 |
Duration smoked | 6 | Not enough observations | N/A |