Table 1.

Sociodemographic and dietary behavior characteristic

Variable	Category	N/%
Sex	Male	7062 (57.83%)
	Female	5150 (42.17%)
Age (years)	18–29	2964 (24.27%)
	30–44	4628 (37.9%)
	45–59	4124 (33.77%)
	60–65	496 (4.06%)
Marital status	Married	9607 (78.67%)
	Unmarried	2605 (21.33%)
Education level	Primary school and below	738 (6.04%)
	Secondary school	2935 (24.03%)
	High school	2733 (22.38%)
	Post-secondary school and above	5806 (47.55%)
Monthly income (RMB)	No income	779 (6.38%)
	< 1,000	845 (6.92%)
	1,000–3,000	3511 (28.75%)
	3,000–5,000	4314 (35.3%)
	> 5,000	2763 (22.63%)
BMI	Underweight	725 (5.94%)
	Normal weight	7392 (60.53%)
	Overweight	3334 (27.3%)
	Obese	761 (6.23%)
Chronic disease	Yes	3534 (28.94%)
	No	8678 (71.06%)
Vegetable intake frequency	None	82 (0.76%)
	1–3 times per week	1046 (8.57)
	4–7 times per week	11,084 (90.67%)
Fruit intake frequency	None	707 (5.79%)
	1–3 times per week	6052 (49.56%)
	4–7 times per week	5453 (44.65%)
Cereal intake frequency	None	302 (2.47%)
	1–3 times per week	2096 (17.16%)
	4–7 times per week	9814 (80.36%)
Tuber intake frequency	None	1728 (14.15%)
	1–3 times per week	8266 (67.69%)
	4–7 times per week	2218 (18.16%)
Bean intake frequency	None	1258 (10.30%)
	1–3 times per week	8866 (72.60%)
	4–7 times per week	2088 (17.10)
Egg intake frequency	None	414 (3.39%)
	1–3 times per week	8211 (67.24%)
	4–7 times per week	3587 (29.37%)
Milk intake frequency	None	3622 (29.66%)
	1–3 times per week	6251 (51.19%)
	4–7 times per week	2339 (19.15%)
Livestock intake frequency	None	185 (1.51%)
	1–3 times per week	4938 (40.44%)
	4–7 times per week	7089 (58.05%)
Poultry intake frequency	None	198 (1.62)
	1–3 times per week	8076 (66.13%)
	4–7 times per week	3938 (32.25%)
Fish intake frequency	None	677 (5.54%)
	1–3 times per week	9127 (74.74%)
	4–7 times per week	2408 (19.72)