Table 4

Eta coefficient to the correlation between the PREDIMED (PREvención con DIeta MEDiterránea) questions and the final score by academic field of study

	Health	Social Sciences and Humanities	Arts	Natural Sciences	Exact Sciences and Engineering
Do you use olive oil as main culinary fat? (Yes) (n=1106)	0.120	0.094	0.033	0.115	0.118
How much olive oil do you consume in a given day? (≥4 tbsp) (n=1099)	0.141	0.008	0.053	0.273	0.304
How many vegetable servings do you consume per day? (≥2) (n=1103)	0.307	0.269	0.313	0.243	0.305
How many fruit units do you consume per day? (≥3 pieces) (n=1104)	0.384	0.419	0.006	0.289	0.523
How many servings of red meat, hamburger or meat products do you consume per day? A full serving is 100–150 g (<1 portion) (n=1092)	0.455	0.211	0.201	0.244	0.349
How many servings (12 g) of butter, margarine or cream do you consume per day? (<1 portion) (n=1088)	0.276	0.246	0.263	0.145	0.214
How much sweetened or carbonated beverages do you drink per day? (<1 per day) (n=1051)	0.160	0.136	0.120	0.148	0.159
Do you drink wine? How much do you drink per week? (≥7 cups) (n=1002)	–	–	0.053	0.031	0.066
How many servings (150 g) of legumes do you consume per week? (≥3) (n=1093)	0.204	0.175	0.233	0.264	0.227
How many servings of fish/seafood do you consume per week? (100–150 g of fish, 200 g of seafood) (≥3) (n=1095)	0.246	0.282	0.409	0.209	0.190
How many times per week do you consume commercial sweets or pastries, such as cakes, cookies, biscuits or custard? (<3 times) (n=1093)	0.258	0.157	0.240	0.154	0.144
How many servings of nuts (including peanuts) do you consume per week? (1 serving: 30 g) (≥3) (n=1079)	0.442	0.355	0.287	0.006	0.340
Do you preferentially consume chicken, turkey or rabbit meat instead of veal, pork, hamburger or sausage? (Yes) (n=1104)	0.113	0.147	0.193	0.203	0.148
How many times per week do you consume vegetables, pasta, rice or other dishes seasoned with sofrito (sauce made with tomato and onion, leek or garlic and simmered with olive oil)? (≥2) (n=1102)	0.004	0.016	0.112	0.041	0.082

Bold denotes statistically significant differences (p<0.05).