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Table 2 Characteristics of study subjects

From: Validity and reliability of a simplified food frequency questionnaire: a cross sectional study among physical health examination adults in southwest region of China

Characteristic Total(n = 239) Male(n = 158) Female(n = 81)
Age(n,%) 44.29 (9.12) 45.43(8.45) 42.02(8.23)
 < 30 8(3.35) 4(2.53) 4(4.94)
30–40 69(28.87) 43(27.22) 26(32.10)
40–50 100(41.84) 67(42.41) 33(40.74)
50–60 44(18.41) 32(20.25) 12(14.81)
 ≥ 60 18(7.53) 12(7.59) 6(7.41)
Education(n,%)
Missing 66(27.62) 44(27.85) 22(27.16)
High school 89(37.24) 62(39.24) 27(33.33)
College school 78(32.64) 48(30.38) 30(37.04)
Graduate school 6(2.51) 4(2.53) 2(2.47)
Monthly Income(RMB,n,%)
Missing 89(37.24) 52(32.91) 37(45.68)
 ≤ 3000 26(10.88) 14(8.86) 12(14.81)
3000–6000 58(24.27) 39(24.68) 19(23.46)
6000–10,000 34(14.23) 29(18.35) 5(6.17)
 ≥ 10,000 32(13.39) 24(15.19) 8(9.88)
Family status(n,%)
Single 40(16.84) 26(16.46) 14(17.28)
Co-habiting 199(83.26) 132(83.54) 67(82.72)
Employment status(n,%)
Employed 182(76.15) 135(85.44) 47(58.02)
Not Employed 57(23.85) 23(14.56) 34(41.98)
Change in body weight in past 3 month(n,%)
Change 69(28.87) 36(22.78) 33(40.74)
No change 170(71.13) 122(77.22) 48(59.26)
Smoke(n,%)
Yes 84(35.15) 76(48.10) 8(9.88)
No 155(64.85) 82(51.90) 73(90.12)
Dietary structure(n,%)
Meat and vegetables mixed 192(80.33) 131(82.91) 61(75.31)
Meat based 26(10.88) 21(13.29) 5(25.93)
Vegetables based 21(8.79) 6(3.80) 15(18.52)
Breakfast frequency (per week, n,%)
 ≥ 5 time 173(72.38) 127(80.38) 46(56.79)
3–4 time 35(14.64) 18(11.39) 17(20.99)
1–2 time 22(9.21) 8(5.06) 14(17.28)
None 9(3.77) 5(3.16) 4(4.94)
Dining out frequency (per week, n,%)
 ≥ 5 time 38(15.90) 27(17.09) 11(13.58)
3–4 time 61(25.52) 51(32.28) 10(12.35)
1–2 time 128(53.56) 77(48.73) 51(62.96)
None 12(5.02) 3(1.90) 9(11.11)