Table 4 Baseline (age 25) predictors of fruits and vegetable and whole grain intake at follow up (age 33 years). Multiple linear regression analyses; unstandardized (B) and standardized regression coefficients (β). The Oslo Youth Study 1991 – 1999.
Dietary habits at follow-up Predictors | Daily fruits and vegetable intake | Daily whole grain intake | ||||||
|---|---|---|---|---|---|---|---|---|
Model 1 | Men | Women | Men | Women | ||||
Psychosocial factors at baseline | B | β | B | β | B | β | B | β |
Attitude | 10.43 | 0.17* | 1.07 | 0.02 | -1.51 | -0.04 | 3.84 | 0.13 |
Subjective norm | -12.92 | -0.18* | -4.41 | -0.05 | -2.72 | -0.06 | -7.91 | -0.22** |
Perceived behaviour control | -11.48 | -0.03 | 88.07 | 0.21** | 23.68 | 0.09 | 22.18 | 0.12 |
Perceived social norms | 33.52 | 0.08 | 79.74 | 0.18** | 5.98 | 0.02 | 4.18 | 0.02 |
Intention | -5.33 | -0.03 | 4.99 | 0.02 | 12.08 | 0.09 | 1.57 | 0.02 |
R2/R2 adjusted, % | 3.7/1.6 | 10.1/8.4 | 2.1/0.0 | 7.1/5.4 | ||||
Model 2 | ||||||||
Model 1 + Demographic factors at follow-up | ||||||||
Attitude | 11.17 | 0.18* | 1.66 | 0.02 | -1.31 | -0.03 | 3.67 | 0.12 |
Subjective norm | -12.51 | -0.17* | -2.46 | -0.03 | -1.56 | -0.03 | -7.41 | -0.20** |
Perceived behaviour control | -17.02 | -0.04 | 85.70 | 0.20** | 16.62 | 0.06 | 18.88 | 0.10 |
Perceived social norms | 36.35 | 0.09 | 66.43 | 0.15* | 2.64 | 0.01 | 2.19 | 0.01 |
Intention | -6.54 | -0.03 | 7.36 | 0.02 | 10.89 | 0.08 | 1.55 | 0.02 |
Education | 9.70 | 0.06 | 25.40 | 0.13* | 18.03 | 0.17* | 15.24 | 0.17* |
Household income | 2.03 | 0.02 | -4.21 | -0.03 | 1.92 | 0.02 | 1.21 | 0.02 |
Marital status | -27.58 | -0.06 | -73.40 | -0.15 | 9.61 | 0.03 | -1.86 | -0.01 |
Children | -4.16 | -0.02 | 17.05 | 0.08 | -0.37 | -0.00 | -8.30 | -0.08 |
R2/R2 adjusted, % | 4.7/0.8 | 14.2/11.2 | 5.1/1.3 | 11.8/8.7 | ||||
Model 3 | ||||||||
Model 2 + baseline eating behaviour | ||||||||
Attitude | 12.40 | 0.20* | 0.91 | 0.01 | -2.42 | -0.06 | 3.85 | 0.12 |
Subjective norm | -11.06 | -0.15* | 0.01 | 0.00 | 1.02 | 0.02 | -5.76 | -0.16* |
Perceived behaviour control | -28.44 | -0.07 | 59.38 | 0.14* | 11.60 | 0.04 | 10.72 | 0.06 |
Perceived social norms | 19.52 | 0.05 | 52.97 | 0.12* | -10.87 | -0.04 | -6.04 | -0.03 |
Intention | -3.04 | -0.02 | 1.16 | 0.01 | 7.21 | 0.06 | -0.79 | -0.01 |
Education | 0.08 | 0.00 | 13.05 | 0.07 | 14.63 | 0.14* | 11.02 | 0.13* |
Household income | -0.98 | -0.01 | -2.97 | -0.02 | -1.96 | -0.02 | 0.54 | 0.01 |
Marital status | -37.43 | -0.09 | -56.32 | -0.12 | 17.87 | 0.06 | -1.79 | -0.01 |
Children | -4.73 | -0.03 | 11.99 | 0.05 | 0.63 | 0.01 | -8.33 | -0.09 |
Baseline eating behaviour† | 75.27 | 0.31** | 79.65 | 0.32** | 31.79 | 0.25*** | 30.68 | 0.31*** |
R2/R2 adjusted, % | 13.2/9.3 | 23.1/20.1 | 10.7/6.6 | 20.2/17.1 | ||||