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Table 3 Development over time in relation to planned education and gender (only schools with participants in both surveys)

From: Time trends (1995–2008) in dietary habits among adolescents in relation to the Norwegian school fruit scheme: the HUNT study

 Daily consumption of fruitDaily consumption of vegetables
Model 1Model 2Model 1Model 2
aOR95% CIp-valueaOR95% CIp-valueaOR95% CIp-valueaOR95% CIp-value
HUNT 3 vs. HUNT11.481.28–1.71< 0.0011.601.19–1.98< 0.0011.411.28–1.53< 0.0011.421.23–1.65< 0.001
Educational intentions1.451.28–1.62< 0.0011.421.20–1.68< 0.0011.511.35–1.68< 0.0011.351.14–1.60< 0.001
Gender0.680.62–0.75< 0.0010.740.65–0.85< 0.0010.820.74–0.91< 0.0010.860.76–0.980.025
Grade
9 th grade0.840.72–0.970.0220.840.72–0.970.0220.790.69–0.910.0010.800.69–0.910.001
10 th grade0.680.58–0.79< 0.0010.690.58–0.79< 0.0010.740.63–0.87< 0.0010.740.63–0.88< 0.001
Urbanity1.150.94–1.420.1581.150.95–1.410.1621.120.97–1.290.1061.120.97–1.290.117
Constant1.331.14–1.55< 0.0011.281.07–1.530.0050.840.97–0.960.0140.830.70–0.970.021
Time x educational intentions1.020.87–1.200.7861.180.97–1.430.094
Time x gender0.850.68–1.060.1440.900.76–1.060.231
 Daily consumption of potato chipsDaily consumption of sugar-sweetened beverages
Model 1Model 2Model 1Model 2
aOR95% CIp-valueaOR95% CIp-valueaOR95% CIp-valueaOR95% CIp-value
HUNT 3 vs. HUNT11.601.26–2.04< 0.0011.100.73–1.680.6232.021.66–2.45< 0.0011.921.51–2.43< 0.001
Educational intentions0.840.68–1.040.1130.630.44–0.920.0150.780.67–0.920.0020.810.67–0.950.014
Gender2.301.89–2.80< 0.0011.761.32–2.35< 0.0012.191.90–2.53< 0.0012.071.73–2.47< 0.001
Grade
9 th grade0.910.72–1.150.4430.910.72–1.150.4471.201.05–1.380.0091.201.04–1.380.009
10 th grade0.840.65–1.080.1810.840.65–1.080.1751.441.26–1.64< 0.0011.441.27–1.64< 0.001
Urbanity0.710.52–0.950.0220.700.52–0.940.0210.730.59–0.890.0020.730.59–0.890.002
Constant0.030.02–0.03< 0.0010.040.03–0.05< 0.0010.140.11–0.15< 0.0010.130.11–0.16< 0.001
Time x educational intentions   1.450.97–2.170.067   0.960.73–1.280.822
Time x gender   1.571.06–2.340.024   1.100.91–1.340.312
 Daily consumption of candy
Model 1Model 2
aOR95% CIp-valueaOR95% CIp-value
HUNT 3 vs. HUNT10.970.83–1.120.6640.920.72–1.170.501
Educational intentions0.870.76–0.990.0440.900.70–1.160.449
Gender1.481.32–1.65< 0.0011.401.19–1.64< 0.001
Grade
9 th grade1.130.92–1.380.1931.130.94–1.370.192
10 th grade1.301.04–1.620.0201.301.04–1.620.021
Urbanity0.880.69–1.150.3760.890.69–1.150.383
Constant0.110.08–0.13< 0.0010.100.08–0.14< 0.001
Time x educational intentions   0.930.69–1.260.673
Time x gender   1.111.19–1.640.673
  1. The reference category for gender: female, Time: Young-HUNT1, Educational intentions: lower educational intentions, grade: 8th grade, Urbanity: urban area
  2. School was included as a random intercept