TABLE II.

Distance from the Biceps of the Shoulders with Fatty Degeneration and Those without Fatty Degeneration in the Supraspinatus and Infraspinatus

	Degeneration			Odds Ratio (95% Confidence Interval)‡
	Absent* (N = 177)	Present* (N = 74)	P Value†
Supraspinatus fatty degeneration			<0.0001	0.04 (0.02, 0.09)
0 mm	17 (10)	65 (88)
>0 to 10 mm	82 (46)	6 (8)
>10 mm	78 (44)	3 (4)
Infraspinatus fatty degeneration			<0.0001	0.16 (0.10, 0.27)
0 mm	25 (14)	57 (77)
>0 to 10 mm	80 (45)	8 (11)
>10 mm	72 (41)	9 (12)

^*The values are given as the number of shoulders with the percentage in parentheses.

^†P value was derived from univariate logistic regression analysis.

^‡Odds ratio reflects the increased odds of having fatty degeneration in the infraspinatus as distance increases from 0 mm to >0 mm.