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. 2016 Nov 2;5(4):e208. doi: 10.2196/resprot.5782

Table 3.

Percentage agreement, percentage expected agreement, and weighted kappa statistic derived from e-EPIDEMIOLOGY and the paper FFQ.

Comparison Agreement (%) Expected agreement (%) Weighted kappa P value
Fruit 89.1 63.2 0.70 <.001
Vegetables 87.0 59.8 0.68 <.001
Legumes 91.2 81.7 0.52 <.001
Chicken/turkey 89.1 66.3 0.68 <.001
Fish 88.2 73.9 0.55 <.001
Red meat 89.5 72.7 0.61 <.001
Soft drinks 89.1 64.8 0.69 <.001
Sweets 88.2 60.9 0.70 <.001
Prepared foods 92.4 83.8 0.53 <.001
Alcoholic beverages 89.9 67.1 0.69 <.001
Average - - 0.64 -