Table 5.

Responses of each item included in PREDIMED questionnaire in the study population grouped according to the five diagnostic cytology categories based on 2013 Italian thyroid cytology classification system.

Questions of PREDIMED questionnaire	TIR2 n. 145 (18.3%)		TIR3a n. 65 (8.2%)		TIR3b n. 50 (6.3%)		TIR4 n. 71 (8.9%)		TIR5 n. 60 (7.6%)
	n	%	n	%	n	%	n	%	n	%	χ2	*p-value
Use of extra virgin olive oil as main culinary lipid	136	93.8	58	89.2	29	58.0	30	42.3	20	33.3	117.99	<0.001
Extra virgin olive oil >4 tablespoons	95	65.5	38	58.5	17	34.0	19	26.8	8	13.3	65.64	<0.001
Vegetables ≥2 servings/day	73	50.3	24	36.9	16	32.0	13	18.3	4	6.7	45.77	<0.001
Fruits ≥3 servings/day	47	32.4	20	30.8	17	34.0	15	21.1	1	1.7	25.11	<0.001
Red/processed meats <1/day	92	63.4	14	24.5	16	32.0	7	9.9	0	0.0	111.47	<0.001
Butter, cream, margarine <1/day	122	84.1	55	84.6	13	26.0	21	29.6	23	38.3	114.66	<0.001
Soda drinks <1/day	113	77.9	36	55.4	17	34.0	15	21.1	3	5.0	126.56	<0.001
Wine glasses ≥7/week	24	16.6	24	36.9	11	22.0	21	29.6	15	25.0	11.60	0.021
Legumes ≥3/week	76	52.4	34	52.3	13	26.0	17	23.9	6	10.0	47.67	<0.001
Fish/seafood ≥3/week	59	40.7	6	9.2	6	12.0	8	11.3	0	0.0	63.39	<0.001
Commercial sweets and confectionery ≤ 2/week	59	40.7	26	40.0	18	36.0	13	18.3	7	11.7	25.00	0.001
Tree nuts ≥3/week	63	43.4	10	15.4	5	10.0	9	12.7	2	3.3	58.93	<0.001
Poultry more than red meats	36	24.8	22	33.8	12	24.0	27	38.0	24	40.0	7.89	0.096
Use of sofrito sauce ≥2/week	88	60.7	41	63.1	12	24.0	20	28.2	16	26.7	48.13	<0.001

PREDIMED, Prevención con Dieta Mediterránea. ^* A significant difference (p < 0.05).