Trajectories of Body Mass Index from Young Adulthood to Middle Age among Canadian Men and Women
Table 3
Risk factors for BMI trajectory group membership, and TVCs influencing trajectory level within each group, NPHS, 1994–2011.
Predictors
Women odds
value
Men odds
value
Aboriginal
N-S
1.0
—
1.0
—
N-OV
2.6
0.047
1.4
0.43
OV-OB
7.1
<0.0001
1.2
0.67
OB-UP
12.2
<0.0001
0.9
0.89
Not graduated from high school
N-S
1.0
—
1.0
—
N-OV
1.03
0.84
0.9
0.43
OV-OB
1.05
0.74
1.2
0.15
OB-UP
0.93
0.77
0.9
0.72
TVCs
Women Alter in BMI trajectory per unit change in TVCs
value
Men Alter in BMI trajectory per unit change in TVCs
value
Years of PA
N-S
0.003
0.04
<0.001
N-OV
<0.001
0.008
OV-OB
0.005
<0.001
OB-UP
<0.001
<0.001
Years of smoking
N-S
<0.001
<0.001
N-OV
0.001
<0.001
OV-OB
0.045
<0.001
OB-UP
<0.001
<0.001
Years of regular drinking
N-S
0.029
0.02
0.053
N-OV
<0.001
0.003
OV-OB
<0.001
<0.001
OB-UP
<0.001
<0.001
Years of living with low income
N-S
0.05
<0.001
<0.001
N-OV
0.07
<0.001
0.02
0.064
OV-OB
0.10
<0.001
0.10
<0.001
OB-UP
0.26
<0.001
0.16
<0.001
Years of employment
N-S
0.08
<0.001
0.04
0.003
N-OV
0.10
<0.001
0.07
<0.001
OV-OB
0.17
<0.001
0.11
<0.001
OB-UP
0.18
<0.001
<0.001
Years of rural living
N-S
0.08
<0.001
0.03
0.002
N-OV
0.10
<0.001
0.354
OV-OB
0.17
<0.001
<0.001
OB-UP
0.18
<0.001
<0.001
Food insecurity
N-S
0.85
<0.001
0.26
0.002
N-OV
2.09
<0.001
0.78
<0.001
OV-OB
3.18
<0.001
1.37
<0.001
OB-UP
4.23
<0.001
0.61
0.019
Age cohort
N-S
0.17
0.129
0.23
0.039
N-OV
0.78
<0.001
0.96
<0.001
OV-OB
0.10
0.620
1.57
<0.001
OB-UP
<0.001
5.91
<0.001
Relative adjusted odds ratios for membership in each trajectory using the N-S group as the reference class. Latent variable which records the most probable long-term food insecurity status of individuals. Age cohorts: 20–29 years at baseline versus 30–39 years at baseline. N-S, normal stable group; N-OV, normal weight to overweight group; OV-OB, overweight to obesity group; OB-UP, obesity-up group; and TVCs, the short for time-varying covariates.
