Table 4.

Stepwise logistic regression analysis in 81 subjects (65 DM1 patients, 26 healthy subjects): CBT and ROCF-copy performances as predicting variables

STEP	Cognitive test	b (SE)	O.R.	C.I. 95 %	P
1	Constant	6.56 (1.78)	-	-	-
	CBT	−1.31 (0.38)	0.27	0.13–0.57	.001
2	Constant	8.19 (2.07)	-	-	-
	CBT	−1.21 (0.41)	0.30	0.13–0.67	.003
	ROCF-copy	−1.13 (0.05)	0.88	0.80–0.97	.007

STEP 2 R² : Cox-Snell = .29, Nagelkerke = .40, Hosmer-Lemenshow: chi-square = 7.36, p = .498

percentage of overall correct prediction = 76.7 %