Mid-term Body Mass Index increase among obese and non-obese individuals in middle life and deprivation status: A cohort study

Table 3 Mean annual Body Mass Index change, adjusted for age and follow-up time.

All individuals
		Women				Men
		Mean	LCI	UCI	p	Mean	LCI	UCI	p
All (Women: n = 11,158, Men: n = 9,831)	*Model 1*
	All	0.19	0.15	0.24	<0.001	0.19	0.16	0.23	<0.001
	*Model 2*
	Affluent	0.19	0.09	0.29	<0.001	0.22	0.15	0.30	<0.001
	2	0.21	0.11	0.32	<0.001	0.16	0.09	0.23	<0.001
	3	0.21	0.13	0.30	<0.001	0.15	0.08	0.22	<0.001
	4	0.13	0.05	0.20	0.001	0.24	0.18	0.31	<0.001
	Deprived	0.24	0.14	0.34	<0.001	0.18	0.11	0.26	<0.001
	*Model 3*
	Trend	0.00	-0.04	0.03	0.801	0.00	-0.03	0.03	0.891
Stratified analysis to non-obese individuals
BMI < 30 at first screening (Women: n = 9,891, Men: n = 8,729)	*Model 1*
	All	0.19	0.15	0.23	<0.001	0.16	0.13	0.19	<0.001
	*Model 2*
	Affluent	0.19	0.10	0.27	<0.001	0.18	0.12	0.24	<0.001
	2	0.24	0.15	0.32	<0.001	0.12	0.05	0.18	<0.001
	3	0.20	0.12	0.28	<0.001	0.13	0.07	0.19	<0.001
	4	0.13	0.05	0.20	0.001	0.21	0.15	0.27	<0.001
	Deprived	0.22	0.13	0.31	<0.001	0.13	0.06	0.21	<0.001
	*Model 3*
	Trend	0.00	-0.03	0.03	0.954	-0.01	-0.04	0.01	0.352
Stratified analysis to obese individuals
BMI 30+ at first screening (Women: n = 1,267, Men: n = 1,102)	Model 1
	All	0.16	-0.03	0.36	0.107	0.34	0.19	0.49	<0.001
	Model 2
	Affluent	0.24	-0.59	1.07	0.570	0.39	-0.08	0.87	0.106
	2	0.04	-0.62	0.71	0.902	0.30	-0.06	0.66	0.105
	3	0.29	-0.18	0.75	0.229	0.25	-0.12	0.63	0.185
	4	0.09	-0.18	0.37	0.505	0.39	0.10	0.69	0.008
	Deprived	0.28	-0.07	0.63	0.120	0.38	0.11	0.65	0.005
	Model 3
	Trend	0.18	-0.01	0.37	0.057	0.17	0.00	0.33	0.049

Model 1. Adjusted for age and follow-up time, with all participants included. Reported co-efficient of Model 1 denotes mean annual BMI change (kg / m² / year).
Model 2. As for model 1, but stratified by deprivation group. Reported co-efficients denote the mean annual BMI change for each deprivation group.
Model 3. As for model 1, but deprivation group entered as ordinal variable, with all individuals included. Reported co-efficient denotes the additional mean annual BMI change for each one level increase in deprivation group (e.g. from deprivation group i to i+1).
LCI: Lower Confidence Interval; UCI: Upper Confidence Interval, BMI: Body Mass Index.

ISSN: 1471-2458