Table 4. Change in potato intake from baseline to second measurement in age-adjusted linear regression analysis by baseline characteristics.
The NOWAC study1.
| Lifestyle, socioeconomic and health-related variables | Change in potato consumption estimates2 | ||||
|---|---|---|---|---|---|
| B | 95% CI for B | p-value | R2 | ||
| Adjusted for potato intake at baseline2 | |||||
| Age (years) (Ref. 40–49) | |||||
| 50–59 | .27 | .24 | .29 | .00 | .32 |
| 60–70 | .56 | .52 | .60 | .00 | |
| Adjusted for age and potato intake at baseline | |||||
| Education(years) (Ref. ≤9) | |||||
| 10–12 | -.16 | -.19 | -.13 | .00 | |
| ≥13 | -.35 | -.38 | -.32 | .00 | .33 |
| Income | |||||
| ≤300,000 | .01 | -.02 | .04 | .57 | |
| (ref. 301,000–450,000) | |||||
| 451,000–600,000 | -.16 | -.20 | -.13 | .00 | .33 |
| >600,000 | -.34 | -.38 | -.29 | .00 | |
| Household structure (Ref. Living with partner) | |||||
| Living alone | -.12 | -.16 | -.07 | .00 | .32 |
| Living with children | .00 | -.03 | .03 | .91 | |
| Region of residence (Ref. Oslo) | |||||
| East (except Oslo) | .29 | .25 | .34 | .00 | |
| South | .38 | .31 | .45 | .00 | |
| West | .40 | .35 | .45 | .00 | .34 |
| Mid | .39 | .33 | .45 | .00 | |
| North | .67 | .62 | .72 | .00 | |
| Smoking status (Ref. Never) | |||||
| Former | -.06 | -.08 | -.03 | .00 | .33 |
| Current | .12 | .09 | .14 | .00 | |
| BMI (Ref. Normal/underweight) | |||||
| Overweight | .00 | -.03 | .03 | .97 | .32 |
| Obese | .00 | -.04 | .05 | .93 | |
| Physical activity (Ref. Moderate) | |||||
| Low | .02 | -.02 | .05 | .42 | .32 |
| High | .02 | -.02 | .05 | .37 | |
| Diabetes (Ref. Non-Diabetics) | |||||
| -.02 | -.12 | .08 | .73 | .32 | |
1n = 38,820. B = Unstandardised beta coefficient, p = significance value, CI: confidence interval, BMI: body mass index NOWAC: The Norwegian Women and Cancer Study
2The dependent variable was potato intake at second measurement. Intake at second measurement adjusted for baseline intake = change in potato intake