Table 2.

Functional outcomes at preoperative baseline, 1 month (30 days), and 12 month (1 yr) after operation. *Three out of 100 in each intervention group were deceased by the time of testing. ^†Fourteen out of 100 in each intervention group were deceased by the time of testing

Measure	Baseline		1 month*		12 month†
	Lighter	Heavier	Lighter	Heavier	Lighter	Heavier
Activities of daily living	4.7 (1.5), n=100	4.6 (1.6), n=100	3.2 (1.5), n=94	3.1 (1.5), n=95	4.2 (1.5), n=79	4.1 (1.6), n=82
Instrumental activities of daily living	5.8 (2.2), n=100	5.9 (2.3), n=100	2.6 (2.0), n=94	2.5 (1.8), n=95	4.8 (2.6), n=79	5.0 (2.5), n=82
Grip strength, dominant hand
Tested, mean (sd)			17 (7), n=91	17 (8), n=91	17 (8), n=72	17 (8), n=74
Timed chair rise (s)
Unsafe/unable to perform			n=26 (28%)	n=35 (37%)	n=8 (10%)	n=9 (11%)
Tested, mean (sd)			2.7 (3.1), n=68	3.2 (6.2), n=59	1.8 (1.1), n=69	1.9 (1.5), n=72
Timed 3 m walk (s)
Unsafe/unable to perform			n=39 (41%)	n=48 (51%)	n=9 (11%)	n=11 (13%)
Tested, mean (sd)			10.6 (6.7), n=55	9.7 (5.8), n=46	6.7 (3.2), n=68	6.6 (3.0), n=70