Impact of stopping smoking on metabolic parameters in diabetes mellitus: A scoping review

Table 3 The results of studies evaluating the effect of smoking cessation on lipid parameters in diabetic patients

Ref.	Country	Study population	Study design	Effect
Reynolds et al[68], 2011	United States	T1D, n = 2124	Cross-sectional analysis of population-based study, comparison of current smokers vs non-smokers and former-smokers vs non-smokers	LDL–negative; HDL–neutral; TG–positive
Reynolds et al[68], 2011	United States	T2D, n = 348	Cross-sectional study, comparison of current smokers vs non-smokers and former-smokers vs non-smokers	Neutral
Luque-Ramírez et al[12], 2018	Spain	T2D, n = 890	Cross-sectional, observational study, comparison of smokers vs former-smokers	LDL–neutral; HDL–positive; TG–positive
Voulgari et al[57], 2011	Greece	T2D, n = 193	Prospective study, comparison of smokers vs former-smokers	LDL–positive; HDL–positive; TG–positive
Feodoroff et al[69], 2016	Finland	T1D, n = 3613	Prospective study, comparison of smokers vs non-smokers and former-smokers vs non-smokers	LDL–neutral; HDL–positive; TG–neutral

T1D: Type 1 diabetes; T2D: Type 2 diabetes; LDL: Low-density lipoprotein; HDL: High-density lipoprotein; TG: Triglycerides.