FIGURE 3.

Adjusted HRs of COPD in baseline HbA1c regarding insulin use (no or yes). HRs adjusted for age, gender, smoking, alcohol drinking, duration of diabetes, type of hypoglycemic drugs, hypertension drug treatment, obesity, baseline fasting glucose, coronary artery disease, congestive heart failure, cancer, hyperlipidemia, hypertension, atrial fibrillation, chronic hepatitis, diabetic retinopathy, hypoglycemia, and urbanization level. CI = confidence interval, COPD = chronic obstructive pulmonary disease, HbA1c = glycated hemoglobin, HR = hazard ratio. ^∗P < 0.05.