Table 4.

Multivariate regression for a high number of traumatic episodes

	Parameter	Odds ratio	95% CI		P value
			Lower	Upper
High number of total instability episodes a	Age at CT scans (years)	0.890	0.791	1.001	.051
	Duration of symptoms (years)	1.225	1.071	1.402	.003**
	Glenoid defect (mm3/m3)	1.015	1.006	1.024	.002**
High number of self-irreducible dislocations b	Absence of bony Bankart lesion	0.963	0.338	2.748	.944
	Age at CT scans (years)	0.975	0.885	1.074	.612
	Duration of symptoms (years)	1.106	0.992	1.233	.068
	Humeral head defect (mm3/m3)	1.008	1.002	1.014	.007**

^aDefined as the number of total instability episodes ≥ 22 times (75th percentile)

^bDefined as the number of self-irreducible dislocations ≥ 4 times (75th percentile)

**P < .01