Table 3. Intake by major food groups.

Food group (g)	IF group (n = 129)	Non-IF group (n = 261)	Total (n = 390)	P-value2)	P-value3)	P-value4)
Grains	87.50 ± 3.201)	94.15 ± 3.70	90.83 ± 2.39	0.186	0.067	0.048
Potatoes·starch	15.72 ± 5.09	28.36 ± 12.06	22.04 ± 5.78	0.387	0.411	0.321
Sugars	2.74 ± 0.40	1.97 ± 0.42	2.36 ± 0.30	0.180	0.178	0.212
Beans	16.25 ± 2.78	14.45 ± 1.78	15.35 ± 1.63	0.587	0.462	0.213
Meats	39.41 ± 7.46	51.40 ± 9.99	45.41 ± 7.04	0.263	0.289	0.133
Eggs	12.19 ± 3.24	27.43 ± 8.92	19.81 ± 4.70	0.132	0.141	0.026
Seafoods	74.81 ± 10.21	16.18 ± 2.85	45.50 ± 5.36	< 0.001	< 0.001	< 0.001
Seaweed	24.76 ± 5.04	4.48 ± 1.05	14.62 ± 2.64	< 0.001	< 0.001	0.002
Seeds and nuts	2.53 ± 1.09	1.84 ± 0.83	2.18 ± 0.69	0.611	0.757	0.882
Vegetables	98.75 ± 5.70	82.48 ± 4.90	90.61 ± 3.83	0.028	0.094	0.110
Mushrooms	6.75 ± 2.45	5.78 ± 1.58	6.27 ± 1.49	0.738	0.837	0.337
Fruits	39.45 ± 23.42	66.94 ± 7.53	53.15 ± 11.92	0.294	0.327	0.899
Dairy products	73.49 ± 0.85	38.18 ± 7.37	55.83 ± 3.28	0.023	0.019	0.015
Drinks·alcohol	17.52 ± 7.72	39.82 ± 4.00	28.67 ± 4.34	0.016	0.079	0.065

Values are expressed as mean ± SE. P-values were analyzed by complex sample general linear model t-test.

IF, institutional foodservice; non-IF, non-institutional foodservice.

¹⁾Values in model 1.

²⁾Adjusted for energy intake (model 1).

³⁾Adjusted for energy intake and sex (model 2).

⁴⁾Adjusted for energy intake, sex, area of residence, education level, and receipt of National Basic Livelihood Security (model 3).