Development of a semi-quantitative food frequency questionnaire for middle-aged inhabitants in the Chaoshan area, China

Table 7 Comparison of percentage contributions of the top three foods for energy, protein, fat, and carbohydrates in urban and rural areas of Jiangsu, Chongqing and Chaoshan in China

Percentage contribution
Energy
Urban
Jiangsu	Rice	36.9	Salad oil	6.9	Flour	5.9
Chongqing	Rice	30.1	Rape oil	10.2	Pork	6.2
Chaoshan	Rice	45.8	Pork	7.7	Peanut oil	6.9
Rural
Jiangsu	Rice	39.5	Lard	14.2	Pork	5.3
Chongqing	Rice	32.1	Rape oil	12.2	Flour	7.7
Chaoshan	Rice	38.2	Peanut oil	8.9	Pork	6.9
Protein
Urban
Jiangsu	Rice	23.1	Pork	7.2	Egg	5.0
Chongqing	Rice	17.5	Horse bean	8.0	Pork	6.5
Chaoshan	Rice	28.6	Pork	7.5	Grass card	3.4
Rural
Jiangsu	Rice	34.4	Pork	6.5	Egg	4.3
Chongqing	Rice	20.4	Pork	7.4	Flour	7.0
Chaoshan	Rice	23.6	Pork	6.6	Beef	4.0
Fat
Urban
Jiangsu	Salad oil	22.1	Soybean oil	17.1	Pork	9.5
Chongqing	Rape oil	30.0	Pork	15.3	Salad oil	1.5
Chaoshan	Peanut oil	21.7	Pork	20.2	Salad oil	13.3
Rural
Jiangsu	Lard	45.8	Pork	16.4	Rape oil	11.7
Chongqing	Rape oil	32.3	Lard	13.5	Pork	12.2
Chaoshan	Peanut oil	24.2	Salad oil	17.6	Pork	15.7
Carbohydrate
Urban
Jiangsu	Rice	57.1	Flour	8.7	Noodle	2.9
Chongqing	Rice	55.1	Flour	10.3	Noodle	7.9
Chaoshan	Rice	73.7	Noodle	2.8	Bread	1.7
Rural
Jiangsu	Rice	59.6	Noodle	5.8	Corn	5.7
Chongqing	Rice	60.1	Flour	16.6	Peas	2.8
Chaoshan	Rice	67.5	Noodle	3.3	Bread	3.0