Table III.

Proportion of day spent at varying arm elevation angles

Elevation angle, °	Preoperative, %	Postoperative, %		P value
		3 mo	1 yr
0-20	52 ± 14	55 ± 16	50 ± 15	.496
20-40	31 ± 12	29 ± 11	33 ± 7	.334
40-60	12 ± 8	10 ± 7	13 ± 10	.515
60-80	3 ± 4	4 ± 4	3 ± 3	.890
80-100	1 ± 1	2 ± 3	1 ± 1	.282
>100	0.5 ± 1	1 ± 1	0.5 ± 1	.242

Data are presented as mean ± standard deviation. Percentages may not add up to 100% because of rounding.