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Table 1 Distribution of patients with missing stage information, and net survival by stage, England, 2013

From: Characteristics of patients with missing information on stage: a population-based study of patients diagnosed with colon, lung or breast cancer in England in 2013

  Colon cancer Non-small cell lung cancer Breast cancer
  No. Missing stage (%)   No. Missing stage (%)   No. Missing stage (%)  
All patients 21,522 18.5   31,188 12.6   41,657 15.6  
Age at diagnosis
 15–64 5566 15.1 * 6890 9.7 * 22,611 12.7 *
 65–74 6024 14.5   10,161 9.9   9376 11.5  
 75–84 6798 18.6   10,008 13.4   6393 20.4  
 85+ 3134 32.1   4129 22.4   3277 38.3  
Sex
 Male 11,316 17.6 * 17,004 12.3     
 Female 10,206 19.6   14,184 13.0     
Income deprivation group
 More affluent 9489 18.7   9769 13.5 * 18,771 16.9 *
 More deprived 12,033 18.4   21,419 12.2   22,886 14.6  
Emergency presentation
 No 15,248 17.3 * 20,549 10.8 * 40,137 15.1 *
 Yes 6274 21.5   10,639 16.0   1520 31.1  
Death within 30 days of diagnosis
 No 19,973 17.1 * 25,919 10.1 * 41,273 15.3 *
 Yes 1549 36.5   5269 24.8   384 48.4  
Surgical procedure
 No 3403 35.7 * 26,410 13.7 * 9450 37.4 *
 Yes 18,119 15.3   4778 6.8   32,207 9.3  
Charlson comorbidity index
 0 15,913 17.1 * 19,398 12.1 * 34,782 14.6 *
 1–2 4009 21.3   8478 12.7   5376 18.9  
  > =3 1600 25.6   3312 15.7   1499 28.2  
One-year net survival (NS %, 95% CI)
 Stage I 0.98 (0.98–0.99)   0.88 (0.87–0.89)   1.00 (1.00–1.01)  
 Stage II 0.95 (0.94–0.96)   0.73 (0.71–0.75)   1.00 (0.99–1.00)  
 Stage III 0.89 (0.89–0.90)   0.48 (0.47–0.50)   0.96 (0.95–0.97)  
 Stage IV 0.44 (0.42–0.45)   0.20 (0.19–0.20)   0.67 (0.65–0.67)  
 Missing stage 0.72 (0.70–0.74)   0.36 (0.34–0.37)   0.92 (0.92–0.93)  
  1. *p-value from chi-squared test ≤0.05