Table 5.

BMI variation by baseline characteristics

	Year 1	Year 2	Year 3	Year 4
Total	n = 1,655	n = 1,092	n = 754	n = 473
Age, years
<40	14.2±5.2	14.5±5.8	13.2±6.2	12.4±6.1
40–50	13.0±5.2	13.3±5.8	12.4±5.8	11.2±5.1
>50	11.5±5.4	11.8±5.8	10.8±5.6	10.8±5.6
p (not adjusted)	<0.001	<0.001	<0.001	<0.001
p (adjusted)	<0.001	<0.001	0.007	<0.001
Gender
Male	13.1±5.9	13.4±6.0	11.3±6.1	11.0±5.6
Female	13.6±5.3	13.4±5.9	12.4±6.0	11.7±5.7
p (not adjusted)	0.975	0.971	0.105	0.427
p (adjusted)	0.358	0.905	0.125	0.786
Diabetesa
Yes	12.6±5.5	12.6±6.1	11.4±5.6	10.8±5.1
No	13.4±5.3	13.7±5.8	12.7±6.1	12.0±5.9
p (not adjusted)	0.012	0.003	0.004	0.028
p (adjusted)	0.331	0.340	0.098	0.117
Hypertensiona
Yes	13.1±5.6	13.2±5.9	12.1±5.8	11.7±5.7
No	13.3±5.1	13.7±5.7	12.5±6.2	11.4±5.6
p (not adjusted)	0.327	0.232	0.395	0.684
p (adjusted)	0.001	0.030	0.151	0.124
Dyslipidemiaa
Yes	12.6±5.4	12.6±5.8	11.4±5.8	11.4±5.8
No	13.5±5.3	13.9±5.9	12.9±6.1	11.8±5.6
p (not adjusted)	<0.001	0.001	0.001	0.444
p (adjusted)	0.248	0.106	0.028	0.792
MetSa
Yes	13.3±5.4	13.3±5.9	12.2±5.9	11.6±5.7
No	13.0±5.4	13.2±5.9	12.0±6.3	11.7±5.7
p (not adjusted)	0.352	0.844	0.758	0.949
p (adjusted)	0.024	0.332	0.898	0.780

^aDiabetes if HbA1c ≥6.5%, fasting plasma glucose = 126 mg/dL, or 2-h postload plasmatic glucose ≥200mg/dL during an OGTT prior to bariatric surgery. Adjusted for age, gender, type of surgery (sex and age adjusted only for other variables).