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 variable	Weighted kappa coefficient	95% CI
Fish	Yearly consumption (month)	1.00	0.99‐1.00
	Yearly consumption (day)	1.00	0.99‐1.00
	Portion size	0.92	0.89–0.96
Shrimp	Yearly consumption (month)	0.86	0.67–1.00
	Yearly consumption (day)	0.86	0.67–1.00
	Portion size	0.94	0.91–0.97
Oyster	Yearly consumption (month)	0.97	0.95–0.99
	Yearly consumption (day)	0.97	0.95–0.99
	Oyster portion size	0.95	0.91–0.98
Blue crab	Yearly consumption (month)	0.96	0.94–0.99
	Yearly consumption (day)	0.96	0.93–0.99
	Portion size	0.87	0.79–0.94