Table 3. Odds ratios of clinical factors for the use of regular insulin determined by multivariate logistic regression analysis.

Variable	Standardized odds ratio	95% Confidence interval	P‐value
BMI (kg/m2)	0.649	0.491–0.858	<0.005
Age (years)	1.026	0.962–1.094	NS
Urinary CPR (μg/day)	0.983	0.940–1.029	NS

Confounding variables are listed in the panel. Variables were considered for the multivariable models when their univariable P‐value was < 0.10. Values are odds ratios with 95% confidence intervals. BMI, body mass index; CPR, C‐peptide immunoreactivity.