Skip to main content

Table 1 Baseline Characteristics of Study Participants and Excluded Cases, Shanghai, China, 2002-2006.

From: Concordance of self-reported and medical chart information on cancer diagnosis and treatment

Characteristic Study cohort (n = 4,948) Excluded casesa (n = 94) P-value
Median age at diagnosis, (IQR) b 51.1 (46.4 - 60.5) 55.2 (47.5-66.9) <0.02
Monthly income (yuan) (%)    
<500    0.97
500-699 11.1 9.6  
700-999 16.5 14.9  
1000-1999 29.4 32.0  
>2000 31.0 32.0  
  12.0 11.7  
Education level (%)    0.20
<High school 46.4 45.7  
High school 37.6 37.2  
>High school 16.0 17.1  
Received chemotherapy (%) 91.2 89.4 0.47
Received radiotherapy (%) 32.1 33.0 0.83
  1. aExcluded cases represent women enrolled in the Shanghai Breast Cancer Survival Study who had missing patient questionnaire data.
  2. bIQR: Inter-quartile range.