Table 1

Characteristics of incidentally vs non-incidentally diagnosed cancer patients, and crude/adjusted ORs of incidental status (n=13 810)

TotalIncidentalCrudeAdjusted*
Nn% (95% CI)OR (95% CI)OR (95% CI)
Total13 8105204 (3 to 4)
Sex0.001†0.204†
 Men58392785 (4 to 5)Ref.Ref.
 Women79712423 (3 to 3)0.63 (0.53 to 0.75)0.88 (0.72 to 1.07)
Age group<0.001†<0.001†
 15–49 years2072311 (1 to 2)0.40 (0.27 to 0.59)0.39 (0.26 to 0.60)
 50–59 years2050653 (2 to 4)0.86 (0.63 to 1.17)0.88 (0.64 to 1.21)
 60–69 years31811174 (3 to 4)Ref.Ref.
 70–79 years36561705 (4 to 5)1.28 (1.00 to 1.62)1.28 (1.00 to 1.64)
 80+ years28511375 (4 to 6)1.32 (1.03 to 1.70)1.45 (1.12 to 1.89)
Cancer site<0.001†<0.001†
 Leukaemia‡45010323 (19 to 27)10.49 (7.55 to 14.58)11.84 (8.49 to 16.51)
 Renal3564613 (10 to 17)5.25 (3.53 to 7.78)5.60 (3.77 to 8.33)
 Thyroid1101312 (7 to 19)4.74 (2.53 to 8.88)7.25 (3.80 to 13.82)
 Liver1031111 (6 to 18)4.23 (2.16 to 8.27)4.42 (2.24 to 8.68)
 Myeloma228209 (6 to 13)3.40 (2.02 to 5.72)3.39 (2.01 to 5.70)
 Gallbladder6857 (3 to 16)2.81 (1.09 to 7.20)2.96 (1.15 to 7.62)
 Mesothelioma7545 (2 to 13)1.99 (0.71 to 5.61)1.88 (0.66 to 5.31)
 Lymphoma698335 (3 to 7)1.75 (1.14 to 2.69)2.10 (1.37 to 3.23)
 Vulval7334 (1 to 11)1.51 (0.46 to 4.94)1.70 (0.52 to 5.60)
 Lung1875774 (3 to 5)1.51 (1.08 to 2.12)1.49 (1.07 to 2.09)
 Melanoma834304 (3 to 5)1.32 (0.85 to 2.05)1.69 (1.09 to 2.64)
 Bladder842283 (2 to 5)1.22 (0.78 to 1.91)1.16 (0.74 to 1.82)
 Colorectal2399663 (2 to 3)Ref.Ref.
 Stomach30283 (1 to 5)0.96 (0.46 to 2.02)0.94 (0.45 to 1.99)
 Ovarian394103 (1 to 5)0.92 (0.47 to 1.81)1.11 (0.56 to 2.20)
 Laryngeal12132 (1 to 7)0.90 (0.28 to 2.90)0.96 (0.30 to 3.12)
 Oropharyngeal21352 (1 to 5)0.85 (0.34 to 2.13)1.05 (0.42 to 2.64)
 Small Intestine5312 (0.3 to 10)0.68 (0.09 to 4.99)0.72 (0.10 to 5.28)
 Pancreatic37062 (1 to 3)0.58 (0.25 to 1.35)0.59 (0.26 to 1.38)
 Endometrial41061 (1 to 3)0.52 (0.23 to 1.22)0.61 (0.26 to 1.43)
 Testicular14921 (0.4 to 5)0.48 (0.12 to 1.98)1.05 (0.25 to 4.43)
 Breast2675341 (1 to 2)0.46 (0.30 to 0.69)0.59 (0.38 to 0.91)
 Sarcoma‡10610.9 (0.2 to 5)0.34 (0.05 to 2.45)0.43 (0.06 to 3.14)
 Brain21520.9 (0.3 to 3)0.33 (0.08 to 1.36)0.37 (0.09 to 1.54)
 Oesophageal56630.5 (0.2 to 2)0.19 (0.06 to 0.60)0.19 (0.06 to 0.60)
 Cervical12500 (0 to 3)N/AN/A
  • *Adjusted for sex, age group and cancer site.

  • †Joint Wald test p value.

  • ‡No information was available on leukaemia or sarcoma type.

  • N/A, not applicable.