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Table 1 Socio-demographic characteristics of participants (N = 404,%)

From: Relationship between Chinese medicine dietary patterns and the incidence of breast cancer in Chinese women in Hong Kong: a retrospective cross-sectional survey

Socio-demographic characteristics Controls (n = 202) Cases (n = 202) P values
Age 0.061
Mean ± SD 45.35 ± 6.765 47.75 ± 6.17  
 ≤34 14 (6.9) 7 (3.5)  
 35–41 39 (19.3) 25 (12.4)  
 42–48 76 (37.6) 72 (36.6)  
 49–55 62 (30.7) 78 (39.0)  
 ≥56 11 (5.4) 18 (9.0)  
BMI 0.132
 Underweight (<18.5) 17 (8.5) 19 (9.5)  
 Normal weight (18.5–24.9) 143 (71.1) 156 (78.4)  
 Overweight (25–29.9) 33 (16.4) 21 (10.6)  
 Obesity (≥30) 8 (4) 3 (1.5)  
Occupational type 0.589
 Full-time 119 (59.5) 113 (55.9)  
 Part-time 14 (7.0) 22 (10.9)  
 Housewife 66 (33.0) 66 (32.7)  
 Others 1 (0.5) 1 (0.5)  
Educational level 0.063
 Primary 21 (10.4) 24 (11.9)  
 Secondary 92 (45.5) 115 (56.9)  
 Tertiary or above 87 (43.1) 62 (30.7)  
 Others 2 (1.0) 1 (0.5)  
Marital status 0.389
 Single 33 (16.3) 25 (12.4)  
 Married or cohabited 155 (76.7) 158 (78.2)  
 Divorced 14 (6.9) 19 (9.4)  
Family tumor history 0.318
 Yes 87 (43.1) 97 (48.0)  
 No 115 (56.9) 105 (52.0)  
  1. BMI body mass index. The following factors are related to breast cancer incidence and were measured by the questionnaire: age, race, BMI, educational level, marital status, religion, family tumor history, and occupation. The two groups were comparable on these factors, although no significant between-group differences were found