Table 1 Baseline characteristics and lifestyle variable in subjects.
From: Interaction between body mass index and family history of cancer on the risk of female breast cancer
Demographic and clinical characteristics | Total (N = 15,055) | BMI (China category, kg/m2)a | P valuesb | |||
|---|---|---|---|---|---|---|
Underweight (N = 697) | Normal weight (N = 5420) | Overweight (N = 6255) | Obesity (N = 2683) | |||
Age of screening | ||||||
Median, IQR | 55.87 (48.38,62.31) | 53.45 (41.39,61.26) | 54.09 (44.91,60.98) | 56.42 (49.96,62.37) | 58.62 (52.28,64.60) | < 0.001 |
Age groups, N (%) | ||||||
< 60 | 9936 (66.00) | 506 (72.60) | 3863 (71.27) | 4057 (64.86) | 1510 (56.28) | < 0.001 |
≥ 60 | 5119 (34.00) | 191 (27.4) | 1557 (28.73) | 2198 (35.14) | 1173 (43.72) | |
Marriage status, N (%) | ||||||
Married/remarried | 13,954 (92.69) | 640 (91.82) | 5079 (93.71) | 5819 (93.03) | 2416 (90.05) | < 0.001 |
Divorced/widowed/unmarried | 1101 (7.31) | 57 (8.18) | 341 (6.29) | 436 (6.97) | 267 (9.95) | |
Educational levels, N (%) | ||||||
Primary | 3516 (23.35) | 88 (12.63) | 866 (15.98) | 1571 (25.12) | 991 (36.94) | < 0.001 |
Secondary | 9684 (64.32) | 468 (67.14) | 3659 (67.51) | 4025 (64.35) | 1532 (57.10) | |
Tertiary | 1855 (12.32) | 141 (20.23) | 895 (16.51) | 659 (10.54) | 160 (5.96) | |
Three-month income levels, N (%) | ||||||
< 2000¥ | 4392 (29.17) | 159 (22.81) | 1449 (26.73) | 1852 (29.61) | 932 (34.74) | < 0.001 |
2000–4000¥ | 6487 (43.09) | 278 (39.89) | 2340 (43.17) | 2721 (43.50) | 1148 (42.79) | |
≥ 4,000¥ | 4176 (27.74) | 260 (37.3) | 1631 (30.09) | 1682 (26.89) | 603 (22.47) | |
Diabetes, N(%) | ||||||
Yes | 1525 (10.13) | 32 (4.59) | 364 (6.72) | 690 (11.03) | 439 (16.36) | < 0.001 |
No | 13,530 (89.87) | 665 (95.41) | 5056 (93.28) | 5565 (88.97) | 2244 (83.64) | |
Family history of cancer | ||||||
Yes | 4210 (27.96) | 191 (27.40) | 1479 (27.29) | 1798 (28.75) | 742 (27.66) | 0.339 |
No | 10,845 (72.04) | 506 (72.60) | 3941 (72.71) | 4457 (71.25) | 1941 (72.34) | |
Smoking, N (%) | ||||||
Yes | 160 (1.06) | 13 (1.87) | 43 (0.79) | 75 (1.20) | 29 (1.08) | 0.184 |
No | 14,895 (98.94) | 684 (98.13) | 5377 (99.21) | 6180 (98.99) | 2654 (98.92) | |
Drinking, N (%) | ||||||
Yes | 478(3.18) | 20(2.87) | 180(3.32) | 210(3.36) | 68(2.53) | 0.165 |
No | 14,577(96.82) | 677(97.13) | 5240(96.68) | 6045(96.64) | 2615(97.47) | |
Daily Fruit and vegetable intake, N (%) | ||||||
< 300 g | 2408 (15.99) | 111 (15.93) | 892 (16.46) | 952 (15.22) | 453 (16.88) | 0.155 |
≥ 300 g | 12,647 (84.01) | 586 (84.07) | 4528 (83.54) | 5303 (84.78) | 2230 (83.12) | |
Frequency of eating preserved food per week, N (%) | ||||||
At least once | 5186 (34.45) | 205 (29.41) | 1895 (34.96) | 2141 (34.23) | 945 (35.22) | 0.025 |
Not even once | 9869 (65.55) | 492 (70.59) | 3525 (65.04) | 4114 (65.77) | 1738 (64.78) | |
Frequency of eating fried and smoked food per week, N (%) | ||||||
At least once | 3465 (23.02) | 162 (23.24) | 1251 (23.08) | 1457 (23.29) | 595 (22.18) | 0.712 |
Not even once | 11,590 (76.98) | 535 (76.76) | 4169 (76.92) | 4798 (76.71) | 2088 (77.82) | |
Frequency of eating high-fat food per week, N (%) | ||||||
At least once | 6564 (43.60) | 261 (37.45) | 2189 (40.39) | 2847 (45.52) | 1267 (47.22) | < 0.001 |
Not even once | 8491 (56.40) | 436 (62.55) | 3231 (59.61) | 3408 (54.48) | 1416 (52.78) | |
