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Table 2 Description of study population by gastrointestinal cancer status

From: Serum calcium and risk of gastrointestinal cancer in the Swedish AMORIS study

  Oesophageal cancer Stomach cancer Colon cancer Rectal cancer Colorectal cancer All
(n = 323) (n = 782) (n = 2519) (n = 1495) (n = 4014) (n = 492044)
Age (years) - Mean (SD) 56.07 (10.63) 58.72 (11.80) 58.93 (11.61) 57.38 (11.02) 58.36 (11.42) 44.62 (14.11)
Sex       
  Male 237 (71.39) 501 (62.47) 1394 (54.09) 926 (60.76) 2320 (56.57) 260469 (52.94)
  Female 95 (28.61) 301 (37.53) 1183 (45.91) 598 (39.24) 1781 (43.43) 231575 (47.06)
SES       
  White Collar 112 (33.73) 262 (32.67) 946 (36.71) 583 (38.25) 1529 (37.28) 182488 (37.09)
  Blue Collar 162 (48.80) 359 (44.76) 1063 (41.25) 684 (44.88) 1747 (42.60) 231088 (46.96)
  Not gainfully employed or Missing 58 (17.47) 181 (22.57) 568 (22.04) 257 (16.86) 825 (20.12) 78468 (15.95)
Follow-up time (years) - Mean (SD) 8.06 (4.71) 7.73 (4.62) 8.46 (4.64) 8.44 (4.51) 8.46 (4.59) 12.55 (3.94)
Calcium (mmol/L) - Mean (SD) 2.40 (0.11) 2.38 (0.10) 2.39 (0.10) 2.39 (0.10) 2.39 (0.10) 2.39 (0.10)
Calcium according to age-specific cut-offs       
  Low 2 (0.60) 9 (1.12) 17 (0.66) 13 (0.85) 30 (0.73) 4025 (0.82)
  Normal 320 (96.39) 778 (97.01) 2508 (97.32) 1477 (96.92) 3985 (97.17) 479026 (97.35)
  High 10 (3.10) 15 (1.87) 52 (2.02) 34 (2.23) 86 (2.10) 8993 (1.83)
Corrected Calcium (mmol/L) - Mean (SD) 2.35 (0.10) 2.34 (0.09) 2.35 (0.09) 2.34 (0.09) 2.35 (0.09) 2.32 (0.09)
Albumin (g/L) Mean (SD) 42.11 (2.97) 41.82 (2.75) 41.92 (2.69) 42.28 (2.68) 42.05 (2.69) 43.18 (2.84)
BMI (kg/m 2 ) 1       
  < 25 17 (58.62) 40 (50.63) 141 (50.72) 96 (55.49) 237 (52.55) 38517 (61.11)
  ≥ 25 12 (41.38) 39 (49.37) 137 (49.28) 77 (44.51) 214 (47.45) 24511 (38.89)
Charlson Comorbidity Index       
  0 273 (82.23) 666 (83.04) 2199(85.33) 1312 (86.09) 3511 (85.61) 454237 (92.32)
  1 30 (9.04) 77 (9.60) 190 (7.37) 113 (7.41) 303 (7.39) 20669 (4.20)
  2 19 (5.72) 42 (5.24) 143 (5.55) 77 (5.05) 220 (5.36) 12869 (2.62)
  3+ 10 (3.01) 17 (2.12) 45 (1.75) 22 (1.44) 67 (1.63) 4269 (0.87)
  1. 1Measured in subcohort with BMI measurement.