The Nordic maintenance care program: the clinical use of identified indications for preventive care

Table 3 Logistic regression models for prediction of the Maintenance Care (MC) -recommendation

	Ordinary (one level¹) Logistic regression			Multi-level (two levels¹) Logistic regression
Factors	OR	95% CI	p-value	OR	95% CI	p-value
Many previous episodes	3.5	1.6 – 7.7	0.002	4.1	1.5 – 10.7	0.005
Long duration	1.4	0.7 – 2.8	0.39	1.5	0.6 – 3.6	0.35
Definitely better by the 4th visit	1.4	0.7 – 3.0	0.33	1.2	0.5 – 3.0	0.62
Akaike’s Index (AIC)²	244.69			225.41

¹ The levels are patients (n = 252) for the one-level model and patients (n = 252) and chiropractors (n = 33) for the two-level model. ² A smaller value for AIC indicates better fit to data.

ISSN: 2045-709X