Table 4.

Multivariate logistic regression analysis

	Odds ratio	95% confidence interval	p-value
Sex (female = 1)	0.76	0.45-1.29	0.355
Age at first cast	0.99	0.99-1.01	0.904
Pirani (reference ≤ 4.5) > 4.5	1.95	1.09-3.47	0.023 *
Cast (reference < 5): 6 to 8	2.95	1.66-5.24	< 0.001 *
Cast (reference<5): ≥ 9	11.96	5.67-25.22	< 0.001 *
Compliance in mths	0.98	096-1.00	0.08

^*p < 0.05