Relationship of cardiometabolic parameters in non-smokers, current smokers, and quitters in diabetes: a systematic review and meta-analysis

Table 6 Meta-regression analysis for difference in HbA1c between smokers and non-smokers

Covariate	N studies	Coefficient (95% CI)	p value
Mean study age	10	0.02 (0.01, 0.02)	<0.001
Study age criteria (under 22 or over 18)	10	0.36 (−0.16, 0.89)	0.016
Type I or Type II diabetes	9	0.43 (−0.07, 0.93)	0.080
Male (percent)	10	0.01 (−0.00, 0.02)	0.101
Study design	10	−0.33 (−1.31, 0.65)	0.461
Duration smoked	4	0.021 (0.004, 0.038)	0.034

The italics values were to indicate statistical significance. A value of <0.05 was statitically significant

ISSN: 1475-2840