Table 3.

Multivariable^a odds ratios (confidence intervals and p-values) for prediabetes and type 2 diabetes by study factors

Study factors	Prediabetes (1) vs. normal blood glucose (0)		Type 2 diabetes (1) vs. prediabetes (0)
	Odds ratio (95% CI)		Odds ratio (95% CI)
Age at index event per 1.0 year	1.05 (1.03–1.07)	< 0.001		NS
Waist circumference per 1.0 cm		NS	1.03 (1.01–1.05)	0.001
Non-participation in cardiac rehabilitation	1.69 (1.19–2.40)	0.003		NS
Current smoking	3.29 (2.00–5.42)	0.001		NS
Blood pressure ≥ 140/90 (80 in diabetes) mmHg	1.48 (1.04–2.11)	0.030	2.67 (1.74–4.11)	0.001
Quality of life (SF-12), mental component per 1.0 points		NS	0.97 (0.94–0.99)	0.042
Insomniab		NS	1.98 (1.30–3.05)	0.002
How much do you think you will have to restrict your activity in the long term due to your heart condition? per 1.0 pointsc		NS	1.14 (1.06–1.23)	0.001

SD standard deviation, NS: not significant, CI confidence interval

^aMulti-adjusted models using backward step-wise elimination in binary logistic regression analyses adjusted for study and starting with risk factors showing p < 0.1 in bivariate association

^bInsomnia (Bergen insomnia scale): a 7 -item self-report inventory designed to assess primary insomnia

^cMeasured by the Perceived risk perception Questionnaire (1–10 Likert scale)