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Table 3 Pearson, Spearman and intraclass correlation coefficients of daily CO2e

From: Diet-related greenhouse gas emissions assessed by a food frequency questionnaire and validated using 7-day weighed food records

  Crude (95 % CI) Energy-adjusted (95 % CI) Energy-adjusted and deattenuated (95 % CI)
Pearson corr. coefficientsa,b 0.56 (0.46, 0.66) 0.67 (0.59, 0.76) 0.68 (0.59, 0.76)
Spearman corr. coefficientsb 0.56 (0.44, 0.67) 0.69 (0.61, 0.77) 0.70 (0.61, 0.77)
Intraclass corr. coefficientsc 0.72 (0.60, 0.81) 0.81 (0.73, 0.87)  
  1. Pearson correlation coefficients and Spearman correlation coefficients of daily CO2e between Meal-Q and the WFR. Intraclass correlation coefficients of daily CO2e between first and second Meal-Q
  2. CO 2 e Carbon dioxide equivalents, WFR Weighed food record
  3. aLog transformed data. bValidity analyses, n = 166. cReproducibility analyses, n = 87