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Table 2 Comparison of initial characteristics in the cancer (n = 84) and cancer-free (n = 420) groups

From: Impact of cancer occurrence on health-related quality of life: A longitudinal pre-post assessment

  Cancer Cancer-free p value b
  n proportion mean sd a n proportion mean sd a  
Age (years)    50.9 5.6    50.9 5.5 1.00
Female 48 57.1    240 57.1    1.00
Alone 13 15.9    59 14.4    0.73
Higher diploma          0.09
   Without diploma 3 3.6    19 4.5    
   Less than High school diploma 21 25.0    154 36.7    
   High school diploma and higher 60 71.4    247 58.8    
Body Mass Index (kg/m2)    23.8 3.6    24.1 3.5 0.43
Alcohol consumption (g/day)    22.5 25.1    20.5 22.9 0.48
Tobacco habits          0.46
   Non-smoker 43 51.2    214 51.5    
   Former smoker 34 40.5    149 35.8    
   Current smoker 7 8.3    53 12.7    
Tobacco consumption (cigarette-year)    7.8 12.5    6.9 11.8 0.54
Physical tiredness 19 22.9    61 14.7    0.07
Morbid conditions          
   Cardiovascular disease 1 1.2    8 1.9    1.00
   Diabetes 2 2.4    4 1.0    0.26
   Digestive disorder c 22 26.8    100 24.9    0.78
   Miscellaneous comorbid conditions d 17 20.5    95 24.1    0.57
   Number of symptoms (at enrolment) e    3.0 2.2    2.9 2.5 0.74
  1. a standard deviation b from t-test for quantitative variables and from chi square for categorical variables c gastric or duodenal ulcer, viral hepatitis, intestinal amebiosis, intestinal polyp, hiatal hernia or diaphragmatic hernia or gallstones. d asthma, rheumatism, rheumatoid arthritis or renal colic. e sum of different signs (see text)