Table 2.

Demographics of participants.

Demographic	Category	Sample size (person)	Proportion (%)
Gender	Male	155	47.26
	Female	173	52.74
Age	18–25 years old	155	47.26
	26–35 years old	89	27.13
	36–45 years old	29	8.84
	46–55 years old	33	10.06
	56–65 years old	18	5.49
	66–72 years old	4	1.22
Marital status	Married	144	43.90
	Unmarried	184	56.10
Education background	Junior high school and below	39	11.89
	Senior high school (including vocational high school)	47	14.33
	Junior college (including higher vocational college)	64	19.51
	Bachelor's degree	143	43.60
	Master's degree or above	35	10.67
Children under 18 years old in the family	N	219	66.77
	Y	109	33.23
Pregnant or breast-feeding women in the family	N	308	93.90
	Y	20	6.10
Health condition	Very good	126	38.41
	Good	153	46.65
	Moderate	48	14.63
	Poor	1	0.31
	Very poor	0	0
Personal annual income	36 000 yuan and below	128	39.02
	36 000–50 000 yuan	64	19.51
	50 000–80 000 yuan	51	15.55
	80 000–100 000 yuan	38	11.59
	Above 100 000 yuan	47	14.33
Annual household income	50 000 yuan and below	33	10.06
	50 000–80 000 yuan	56	17.08
	80 000–100 000 yuan	62	18.90
	100 000–150 000 yuan	53	16.16
	Above 150 000 yuan	124	37.80
Number of family members	1	3	0.91
	2	30	9.15
	3	144	43.90
	4	79	24.09
	5 and above	72	21.95
Household pork consumption per week	500 g and below	43	13.11
	500–1 000 g	121	36.89
	1 000–1 500 g	92	28.05
	1 500–2 000 g	30	9.15
	Above 2 500 g	42	12.80