Table 4.

Multivariate Linear Regression Models of Skin AF at Follow-Up (Adjusted for Baseline Skin AF, Age, Diabetes Duration, Creatinine, and Smoking) versus Different Integrated Assessments of HbA1c

HbA1c assessment Covariates	Regression coefficient	95% confidence interval	p value
Variance of HbA1c	0.069	0.024–0.115	0.003
Skin AF time 0	0.658	0.577–0.739	<0.001
Age	0.012	0.007–0.018	<0.001
Diabetes duration	0.003	–0.006–0.012	0.512
Creatinine	0.004	0.000–0.007	0.027
Smoking	0.064	–0.070–0.198	0.350
Mean HbA1c	0.069	0.011–0.127	0.021
Skin AF time 0	0.647	0.565–0.729	<0.001
Age	0.012	0.007–0.018	<0.001
Diabetes duration	0.000	–0.009–0.010	0.959
Creatinine	0.003	0.000–0.006	0.040
Smoking	0.067	–0.067–0.201	0.327
HbA1c max	0.052	0.014–0.090	0.007
Skin AF time 0	0.650	0.569–0.732	<0.001
Age	0.013	0.007–0.018	<0.001
Diabetes duration	0.001	–0.008–0.010	0.851
Creatinine	0.003	0.000–0.006	0.037
Smoking	0.064	–0.070–0.198	0.346
HbA1c at baseline	0.052	0.007–0.097	0.022
Skin AF time 0	0.649	0.567–0.731	<0.001
Age	0.012	0.007–0.018	<0.001
Diabetes duration	0.001	–0.008–0.010	0.848
Creatinine	0.004	0.001–0.007	0.023
Smoking	0.066	–0.069–0.200	0.339