Body Mass Index Trajectories among Middle-Aged and Elderly Canadians and Associated Health Outcomes
Table 2
Odds ratios (OR) and confidence intervals (CI) for being categorized in the risk BMI trajectory groups (i.e., OV-S, OB I-S, and OB II-S) compared to N-S group by individual characteristics among adults in Canada, the NPHS, 1994–2011: result of multinomial logistic regression.
Risk factors
OV-S
OB I-S
OB II-S
OR 95% CI
OR 95% CI
OR 95% CI
Age
0.99 (0.97–1.02)
0.96 (0.94–0.99)
0.99 (0.91–0.98)
Race/ethnicity
Aboriginal (ref.)
White
0.31 (0.09–1.14)
0.42 (0.10–1.76)
0.81 (0.08–8.10)
Other races
0.15 (0.04–0.58)
0.15 (0.03–0.65)
0.11 (0.01–1.46)
Education
Less than high school (ref.)
1.0
1.0
1.0
High school
0.90 (0.64–1.25)
0.82 (0.58–1.19)
1.00 (0.57–1.76)
Some college
0.55 (0.42–0.73)
0.56 (0.41–0.77)
0.78 (0.48–1.25)
College and above
0.61 (0.47–0.80)
0.58 (0.43–0.78)
0.64 (0.40–1.03)
Physical activity (latent var.)
Inactive (ref.)
1.0
1.0
1.0
Moderate active
0.91 (0.73–1.14)
0.90 (0.70–1.16)
0.50 (0.35–0.72)
Active
0.74 (0.57–0.95)
0.55 (0.41–0.74)
0.11 (0.06–0.20)
Smoking (latent var.)
Nonsmoker (ref.)
1.0
1.0
1.0
Former smoker
1.20 (0.89–1.61)
1.05 (0.75–1.46)
1.19 (0.74–1.94)
Smoker
0.53 (0.42–0.66)
0.37 (0.28–0.49)
0.37 (0.28–0.58)
Living with low income
Gender
Men (ref.)
1.0
1.0
1.0
Women
0.48 (0.35–0.68)
0.65 (0.45–0.94)
1.21 (0.66–2.21)
Living with high income
Gender
Men (ref.)
1.0
1.0
1.0
Women
0.29 (0.23–0.37)
0.25 (0.19–0.32)
0.62 (0.40–0.95)
Relative adjusted odds ratios for membership in each trajectory using the N-S group as the reference class.
