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Table 4 Tracking of energy and macronutrient intakesa between age 15y and young adulthood (mean age 22.0y).

From: Tracking of physical activity, fitness, body composition and diet from adolescence to young adulthood: The Young Hearts Project, Northern Ireland

  Males Females
  n κ P n κ P
Energy (MJ/d) 245 0.169 <0.0001 231 0.154 0.001
Protein (g/d) 245 0.169 <0.0001 231 0.202 <0.0001
% energy from protein 245 0.019 0.683 231 0.098 0.039
Total fat (g/d) 245 0.117 0.011 231 0.152 0.001
% energy from fat 245 0.143 0.002 231 0.051 0.282
Carbohydrate (g/d) 245 0.114 0.013 231 0.120 0.011
% energy from carbohydrate 245 0.117 0.011 231 0.063 0.182
  1. a At both timepoints, energy and macronutrient intakes were assessed using the diet history method.
  2. κ indicates extent of tracking, and can be interpreted as follows: κ < 0.20, poor tracking; κ 0.21–0.40, fair; κ 0.41–0.60, moderate; κ 0.61–0.8, good; κ 0.81–1.0, very good (Altman, 1991).