Introduction:
Diabetes who smoke may have poor health outcome more likely than nonsmokers.

Objectives:
To compare of a 1-year health outcome related smoking among diabetes patients.

Methods:
This retrospective study was done by reviewing medical records among registered diabetes patients in year 2018 which classified in 3 groups related smoking; non-smoker, ex-smoker and current smoker. This study conducted at the 67th Public Health Center, Department of Health, Bangkok, Thailand.

Results:
The total T2DM patients were 442 cases and received diabetes care were included in the study, but 24 patients were discarded because of incomplete data on key variables including results of blood chemistry. The total number of valid patients for the final analysis was 418 subjects were enrolled in the study classified to 360 non-smokers (mean age 62.99 years), 32 ex-smokers (mean age 61.09 years) and 26 current-smokers (mean age 59.85 years). Total mean age was 62.65+10.06 years. To compare between 2017 and 2018, the study found that all groups increased mean in body mass index (0.13 kg/m2), waist circumference (1.42 cm), diastolic blood pressure (0.24 mmHg), Hemoglobin (0.11 g/dL), Total cholesterol (2.54 mg/dL), HDL cholesterol (0.92 mg/dL), Uric acid (0.09 mg/dL), eGFR (1.57 ml/min/1.73m2) and decreased HbA1C (0.24 %) in 1 year. Total mean of systolic blood pressure decreased 0.97mmHg except ex-smokers, Creatinine decreased 0.02 mg/dL except current-smokers. Total mean increased 0.73 mg/dL in fasting blood sugar, 1.66 mg/dL in Triglyceride except ex-smokers and LDL cholesterol increased 0.31 mg/dl except non-smokers. In non-smokers, there were significant differences (p <0.05) increased in waist circumference, eGFR and decreased in HbA1C and Creatinine. In ex-smokers, there were significant differences increased in waist circumference, Hemoglobin and HDL cholesterol. In current-smoker, there were significant differences increased in Uric acid and decreased in HbA1C.

Conclusion(s):
This study found that in non-smoker diabetes patients was HbA1c lower than other groups.