Primary Analysis Sample		Subgroup Samplea
	Weight Gain Group n = 325	Nonweight Gain Groupb n = 1,195	Weight Gain Group n = 134	Nonweight Gain Groupb n = 646
Inpatient admissions
Patients with an inpatient admission, % (n)	11.7 (38)	10.4 (124)	11.2 (15)	8.4 (54)
Number of inpatient admissions, mean [SD]	0.2 [0.5]	0.1 [0.5]	0.2 [0.6]	0.1 [0.4]
Inpatient expenditures, mean [SD]	$3,694 [$13,938]	$3,149 [$14,371]	$4,674 [$17,585]	$2,131 [$9,791]
Emergency room visits
Patients with an ER visit, % (n)	23.7 (77)	20.8 (249)	26.1 (35)	21.4 (138)
Number of ER visits, mean [SD]	0.4 [1.3]	0.3 [0.8]	0.5 [1.8]	0.3 [0.8]
ER expenditures, mean [SD]	$312 [$1,195]	$243 [$836]	$395 [$1,621]	$255 [$773]
Outpatient office visits and services
Patients with outpatient services, % (n)	100.0 (325)	100.0 (1,195)	100.0 (134)	100.0 (646)
Number of outpatient services, mean [SD]	46.8 [36.1]	51.9 [43.3]	46.8 [39.9]	48.1 [35.7]
Outpatient services expenditures, mean [SD]	$5,579 [$7,446]	$6,428 [$13,187]	$4,935 [$5,970]	$5,388 [$11,928]
Pharmacy
Number of prescription claims, mean [SD]	42.4 [28.5]	41.9 [27.2]	44.0 [28.6]	41.3 27.9
Prescription drug expenditures, mean [SD]	$3,537 [$3,723]	$4,026 [$4,716]	$4,137 [$4,750]	$3,922 [$4,993]
Total cost of health care services
Mean [SD]	$13,122 [$18,630]	$13,845 [$24,645]	$14,140 [$21,911]	$11,696 [$18,987]
Median	$7,126	$7,110	$6,743	$6,626

^a Sample restricted to patients with BMI ≥ 30 and no evidence of previous cardiovascular disease.

^b Weight gain = increase in weight by > 3%; nonweight gain = weight gain ≤ 3% and weight loss.

BMI = body mass index; ER = emergency room; SD = standard deviation.