Table 3. Gender-specific association of the CTI with dyslipidemia incidence.
Sex Variable Number of events, n Model 1 Model 2 Model 3
HR 95% CI p HR 95% CI p HR 95% CI p
Male CTI (per 1-unit) 785 1.21 1.06-1.37 0.01 1.19 1.05-1.35 0.01 1.18 1.04-1.35 0.01
Q1 (Ref) 148
Q2 178 1.07 0.86-1.33 0.53 1.05 0.85-1.31 0.65 1.00 0.83-1.31 0.51
Q3 214 0.98 0.80-1.21 0.85 0.95 0.77-1.17 0.62 0.94 0.77-1.16 0.72
Q4 245 1.28 1.04-1.57 0.02 1.24 1.01-1.53 0.04 1.25 1.04-1.56 0.03
P for trend 0.04 0.07 0.05
Female CTI (per 1-unit) 1226 1.04 0.95-1.14 0.41 1.04 0.95-1.14 0.40 1.01 0.92-1.12 0.56
Q1 (Ref) 232
Q2 270 0.98 0.83-1.17 0.86 0.98 0.82-1.17 0.81 0.96 0.81-1.14 0.77
Q3 328 1.13 0.95-1.33 0.16 1.11 0.93-1.31 0.24 1.08 0.92-1.28 0.29
Q4 396 1.09 0.93-1.28 0.31 1.09 0.92-1.28 0.33 1.06 0.90-1.24 0.40
P for trend 0.15 0.16 0.22
HR = hazard ratio; CI = confidence interval. Q1 denotes the lowest quartile, used as the reference category. Model 1 included no covariate adjustment; Model 2 was adjusted for demographic and lifestyle factors (age, residence, marital status, education, smoking, and alcohol consumption); and Model 3 additionally accounted for comorbid conditions such as chronic diseases, arthritis, liver disease, asthma, kidney disease, and gastrointestinal disorders, as well as the use of anti-diabetic medication, anti-hypertensive medication, and lipid-lowering medication as covariates. The p for trend was estimated by modeling the median value of each quartile as a continuous variable in the Cox regression model.