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Table 1 Sample characteristics of colorectal cancer patients, by emergency diagnosis and emergency surgery status

From: Missed opportunities: racial and neighborhood socioeconomic disparities in emergency colorectal cancer diagnosis and surgery

  Diagnosis (n = 83,330)a Surgery (n = 55,046)a
Characteristic No emergency diagnosis (n = 59,082) Emergency diagnosis (n = 24,248) p (Chi2) No emergency surgery (n = 40,740) Emergency surgery (n = 14,306) p (Chi2)
  n % n %   n % n %  
Race           
White 54527 71.90 21313 28.10 <.0001 37957 75.01 12643 24.99 <.0001
African American 4555 60.81 2935 39.19   2783 62.60 1663 37.40  
Neighborhood poverty rate           
<10% 35999 71.72 14198 28.28 <.0001 25254 74.81 8505 25.19 <.0001
10-19.9% 14902 71.98 5801 28.02   10170 75.09 3374 24.91  
≥20% 8181 65.82 4249 34.18   5316 68.66 2427 31.34  
Sex           
Male 27154 73.36 9860 26.64 <.0001 18215 75.71 5843 24.29 <.0001
Female 31928 68.94 14388 31.06   22525 72.69 8463 27.31  
Age (mean [SD]) 77.2 7.1 79.6 7.6 <.0001 76.8 6.8 78.9 7.4 <.0001
Year           
1992-1996 24621 70.68 10214 29.32 0.4126 9311 74.05 3263 25.95 0.9327
1997-2001 13092 71.21 5292 28.79   14847 74.08 5195 25.92  
2002-2005 21369 70.97 8742 29.03   16582 73.93 5848 26.07  
Medicaid enrollee           
No 52170 72.54 19753 27.46 <.0001 36395 75.51 11802 24.49 <.0001
Yes 6912 60.59 4495 39.41   4345 63.44 2504 36.56  
Rural urban commuting area           
Metropolitan 46093 69.38 20346 30.62 <.0001 31657 72.45 12037 27.55 <.0001
Micropolitan 5246 76.23 1636 23.77   3595 78.91 961 21.09  
Rural 7743 77.36 2266 22.64   5488 80.75 1308 19.25  
Stage           
Local 25470 78.60 6936 21.40 <.0001 17622 79.48 4549 20.52 <.0001
Regional 20160 69.12 9006 30.88   16936 72.69 6363 27.31  
Distant 9840 60.94 6307 39.06   5436 64.66 2971 35.34  
Tumor location           
Left 31557 73.93 11127 26.07 <.0001 20204 75.47 6568 24.53 <.0001
Right 25162 68.09 11790 31.91   19953 73.04 7366 26.96  
Tumor Grade           
Low 40222 72.40 15337 27.60 <.0001 30066 75.09 9976 24.91 <.0001
High 10551 68.11 4941 31.89   8134 72.08 3150 27.92  
Histology           
Other adenocarcinoma 49541 71.73 19526 28.27 <.0001 35208 74.46 12078 25.54 <.0001
Mucinous adenocarcinoma/signet ring cell 6252 68.95 2816 31.05   4920 73.01 1819 26.99  
Other 2365 64.09 1325 35.91   544 61.40 342 38.60  
Comorbidity           
0 34535 73.76 12284 26.24 <.0001 24359 76.19 7613 23.81 <.0001
1 14000 69.73 6077 30.27   9889 73.86 3500 26.14  
≥2 9628 62.06 5887 37.94   6492 67.03 3193 32.97  
Preventable hospitalization           
No 55900 72.62 21077 27.38 <.0001 38522 75.20 12704 24.80 <.0001
Yes 3182 50.09 3171 49.91   2218 58.06 1602 41.94  
Prior hospitalization      <.0001      
No 38866 82.62 8178 17.38   23910 82.93 4920 17.07  
Yes 20216 55.71 16070 44.29   16830 64.20 9386 35.80  
Endoscopies/prior year           
None 32028 67.93 15118 32.07 <.0001 19435 69.11 8685 30.89 <.0001
1 16806 75.27 5521 24.73   13345 80.29 3277 19.71  
≥2 10248 73.96 3609 26.04   7960 77.25 2344 22.75  
  1. aNumbers may not add up to total due to missing data.