Table 4. Energy and major nutrients intake.

Category		IF group (n = 129)	Non-IF group (n = 261)	Total (n = 390)	P-value2)	P-value3)	P-value4)
Energy (kcal)		505.44 ± 18.321)	452.47 ± 14.61	478.96 ± 11.82	0.024	0.146	0.140
Water (g)		221.53 ± 14.53	143.53 ± 9.14	182.53 ± 8.55	< 0.001	< 0.001	< 0.001
Carbohydrates (g)		85.94 ± 2.47	83.69 ± 2.69	84.82 ± 1.77	0.549	0.916	0.874
Protein (g)		19.20 ± 1.11	14.88 ± 0.88	17.04 ± 0.40	0.002	0.022	0.024
Fat (g)		9.13 ± 1.04	5.23 ± 0.43	7.18 ± 0.59	< 0.001	< 0.001	< 0.001
Energy contribution (%)
	Carbohydrate	71.02 ± 1.04	75.42 ± 0.92	73.22 ± 0.70	0.002	0.003	< 0.001
	Protein	14.72 ± 0.45	12.83 ± 0.49	13.78 ± 0.34	0.003	0.026	< 0.001
	Lipid	13.90 ± 0.79	9.60 ± 0.61	11.75 ± 0.50	< 0.001	< 0.001	0.002
Dietary fiber (g)		6.35 ± 0.38	4.65 ± 0.26	5.50 ± 0.23	< 0.001	0.002	0.004
Calcium (mg)		130.29 ± 7.98	90.17 ± 5.42	110.53 ± 4.77	< 0.001	< 0.001	0.001
Iron (mg)		4.99 ± 0.38	3.50 ± 0.14	4.24 ± 0.21	< 0.001	0.002	< 0.001
Phosphorus (mg)		279.03 ± 11.92	213.12 ± 9.83	246.08 ± 7.96	< 0.001	< 0.001	0.001
Sodium (mg)		1,438.34 ± 83.73	822.61 ± 49.11	1,130.48 ± 49.67	< 0.001	< 0.001	< 0.001
Potassium (mg)		765.83 ± 36.09	609.01 ± 33.59	687.42 ± 24.42	0.002	0.008	0.007
Vitamin A (R.E)		203.97 ± 22.20	99.18 ± 10.60	151.58 ± 12.41	< 0.001	< 0.001	< 0.001
Thiamine (mg)		0.55 ± 0.02	0.41 ± 0.02	0.48 ± 0.01	< 0.001	< 0.001	0.001
Riboflavin (mg)		0.31 ± 0.02	0.23 ± 0.01	0.27 ± 0.01	0.001	0.002	0.008
Niacin (mg)		4.12 ± 0.20	2.86 ± 0.18	3.49 ± 0.13	< 0.001	< 0.001	0.001
Vitamin C (mg)		13.34 ± 1.33	13.41 ± 1.50	13.38 ± 0.95	0.972	0.820	0.902

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).