Effect of ethnicity on weight loss among adolescents 1 year after bariatric surgery

Table 3 Estimated anthropometric values from morbidly obese boys 1 year after bariatric surgery by ethnicity

Measurement	Non-hispanic whites,	Non-hispanic blacks,	Hispanics,	Overall,
	estimate (95%CI)	estimate (95%CI)	estimate (95%CI)	estimate1 (95%CI)
Before surgery
n	142	23	42	207
BMI (kg/m2)	51.2 (49.8-52.7)	52.3 (49.0-55.5)	52.8 (50.8-54.9)	51.68 (50.53-52.84)
BMI (%)	99.9 (99.6-100.0)	99.9 (99.8-100.0)	99.9 (99.8-100.0)	99.9 (99.8-100..0)
Weight (kg)2	162.4 (158.0-166.7)	166.7 (155.3-178.2)	161.8 (155.8-167.8)	162.8 (159.3-166.3)
3 mo after surgery
n	127	21	38	186
BMI (kg/m2)	46.9 (45.5-48.3)	47.5 (44.8-50.2)	47.1 (45.2-48.9)	46.9 (45.9-48.1)
BMI (%)	99.7 (99.6-99.8)	99.9 (99.7-99.9)	99.8 (99.7-99.9)	99.8 (99.7-99.9)
Weight (kg)2	148.5 (144.1-152.8)	151.7 (141.7-161.7)	144.3 (138.6-149.9)	148.0 (144.5-151.4)
EWL (kg)2	13.2 (11.7-14.6)	14.4 (10.9-17.9)	17.3 (13.3-21.3)	14.1 (12.8-15.4)
EWL (%)	8.1 (7.3-8.9)	8.5 (6.6-10.3)	10.4 (8.2-12.6)	8.6 (7.9-9.4)
6 mo after surgery
n	83	17	26	126
BMI (kg/m2)	41.9 (40.3-43.9)	43.4 (40.9-45.9)	41.8 (39.9-43.6)	42.0 (40.8-43.2)
BMI (%)	98.7 (98.1-99.3)	99.6 (99.4-99.8)	99.6 (99.4-99.7)	98.9 (98.6-99.4)
Weight (kg)2	132.7 (127.8-137.6)	138.5 (129.8-147.1)	128.1 (122.4-133.8)	132.4 (128.7-136.1)
EWL (kg)2	29.7 (27.4-31.9)	28.1 (22.8-33.5)	34.0 (29.6-38.4)	30.3 (28.4-32.1)
EWL (%)	18.3 (16.8-19.8)	16.2 (13.9-18.6)	20.5 (18.2-22.8)	18.4 (17.3-19.6)
12 mo after surgery23
n	49	7	9	65
BMI (kg/m2)	39.6 (37.8-41.5)	40.2 (35.5-44.8)	37.0 (34.0-40.0)	39.3 (37.8-40.9)
BMI (%)	97.5 (95.8-99.1)	98.6 (96.9-100.4)	98.2 (96.8-99.7)	97.7 (96.5-98.9)
Weight (kg)2	125.3 (119.6-130.9)	127.9 (113.3-142.5)	113.7 (104.6-122.9)	128.7 (118.9-128.5)
EWL (kg)2	37.9 (33.7-42.1)	40.4 (26.8-54.0)	47.9 (41.2-54.6)	40.1 (36.5-43.7)
EWL (%)	22.9 (20.4-25.4)	23.0 (16.0-30.0)	29.4 (25.2-33.6)	24.0 (21.9-26.2)

Model adjusted by age and type of surgery; “Other” group not included due to small sample size;

¹P < 0.01 for change across all time points for Hispanics;

²P < 0.001 for change across all time points;

³P < 0.001 for change across all time points, except for weight percentile was not significant for non-Hispanic black; EWL: Estimated weight loss or the difference between baseline weight (kg) and weight at each respective time point; BMI: Body mass index.