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

Table 5

Weighted kappa coefficients for coastal and noncoastal household members’ typical yearly, daily, and monthly consumption estimates and typical portion sizes of finfish, shrimp, oyster, and blue crab. Weighted kappa coefficients for all test-retest outputs had . Power calculations for sample size of n = 42, based on results on Pearson’s correlation from Fisher’s z-test for monthly, daily, and portion categories are included for each seafood type.

dsds	Consumption Variable	Coastal	Noncoastal	Sample power (based on n = 42)
		Weighted kappa coefficient	Weighted kappa coefficient
Fish	Yearly consumption (month)	0.95	1.00	>0.999
	Yearly consumption (day)	0.95	1.00	>0.999
	Portion size	0.96	0.89	>0.889
Shrimp	Yearly consumption (month)	0.80	0.98	>0.999
	Yearly consumption (day)	0.81	0.98	>0.999
	Portion size	0.96	0.63	>0.986
Oyster	Yearly consumption (month)	0.98	0.89	>0.999
	Yearly consumption (day)	0.98	0.86	>0.999
	Oyster portion size	0.94	0.91	>0.993
Blue crab	Yearly consumption (month)	0.99	0.83	>0.999
	Yearly consumption (day)	0.98	0.85	>0.999
	Portion size	0.87	0.97	>0.697