Journal of Environmental and Public Health / 2020 / Article / Tab 2

Research Article

Test-Retest Reliability of a Food Frequency Questionnaire to Assess Seafood Intake Dynamics for High-End Consumers in Coastal Gulf of Mexico Communities

Table 2

Weighted kappa coefficients obtained in the reliability analyses on survey questions that discerned yearly fish, shrimp, oyster, and blue crab consumption frequencies, as well as respective portion sizes. Weighted kappa coefficients for all test-retest outputs had .

Consumption variableWeighted kappa coefficient95% CI

FishYearly consumption (month)1.000.99‐1.00
Yearly consumption (day)1.000.99‐1.00
Portion size0.920.89–0.96

ShrimpYearly consumption (month)0.860.67–1.00
Yearly consumption (day)0.860.67–1.00
Portion size0.940.91–0.97

OysterYearly consumption (month)0.970.95–0.99
Yearly consumption (day)0.970.95–0.99
Oyster portion size0.950.91–0.98

Blue crabYearly consumption (month)0.960.94–0.99
Yearly consumption (day)0.960.93–0.99
Portion size0.870.79–0.94

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