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Table 1 Characteristics of study participants according to BMI and sitting time

From: Physical activity, obesity and sedentary behaviour and the risks of colon and rectal cancers in the 45 and up study

  BMI Kg/m2 (%) Sitting time hours a day (%)
Characteristic 15- < 23.6 ≥23.6- < 26.2 ≥26.2- < 29.4 ≥29.4-≤50 Unknown 0- < 3 3- < 5 5- < 8 8+ Unknown
total 56,275 54,765 57,130 57,205 1209 31,458 60,710 64,980 52,927 16,509
Male 18,437 (33%) 27,633 (50%) 31,662 (55%) 26,372 (46%) 551 (46%) 13,357 (42.5%) 27,054 (44.6%) 29,959 (46.1%) 27,654 (52.3%) 6631 (40.2%)
Mean Age 65.3 63.6 62.4 61.1 64.9 62.7 63.6 63.6 60.6 67.3
Education
 University degree or higher 5507 (30.5%) 8255 (30.3%) 7991 (25.6%) 5196 (20.0%) 124 (22.9%) 2586 (19.7%) 5302 (19.9%) 7697 (26.0%) 10,437 (38.2%) 1051 (16.5%)
Region of birth
 Australia 12,372 (67.1%) 19,562 (70.8%) 23,510 (74.3%) 20,258 (76.8%) 357 (64.8%) 9779 (73.2%) 19,907 (73.6%) 21,901 (73.1%) 19,725 (71.3%) 4747 (71.6%)
Smoking status
 Current 3187 (17.4) 3480 (12.7%) 3959 (12.6%) 3847 (14.7%) 74 (13.5%) 1937 (14.6%) 3807 (14.2%) 3976 (13.4%) 3746 (13.6%) 1081 (16.4%)
Alcohol consumption (drinks/week)
 14 or more 4467 (24.7%) 7737 (28.4%) 9565 (30.6%) 7734 (29.8%) 131 (24.8%) 3882 (29.6%) 7917 (29.7%) 8534 (28.8%) 7703 (28.1%) 1598 (25.3%)
Adherence to fruit and vegetable guidelines
 No 14,880 (82.1%) 22,133 (81.2%) 25,475 (81.6%) 20,960 (80.7%) 456 (83.4%) 10,586 (80.4%) 21,432 (80.2%) 23,843 (80.6%) 22,956 (84.1%) 5087 (79.4%)
Consumption of processed meat (servings/week)
 2 or more 6412 (34.8%) 10,220 (37.0%) 12,952 (40.9%) 12,144 (46.1%) 217 (39.4%) 5105 (38.2%) 10,722 (39.6%) 12,239 (40.9%) 11,569 (41.8%) 2310 (34.8%)
Intake of red meat (servings/week)
 4 or more 7162 (40.3%) 11,248 (41.9%) 13,770 (44.7%) 12,164 (47.4%) 227 (42.9%) 5549 (42.8%) 11,611 (44.1%) 13,062 (44.7%) 11,713 (43.4%) 2636 (43.2%)
Consumption of fibre (servings/week)
 21 or more 6369 (35.7%) 8818 (32.7%) 8894 (28.8%) 6911 (26.9%) 145 (27.1%) 3902 (30.0%) 8440 (32.0%) 9331 (31.8%) 7700 (28.5%) 1764 (28.7%)
Diabetes Mellitus
 Yes 1546 (8.4%) 2681 (9.7%) 3993 (12.6%) 5956 (22.6%) 134 (24.3%) 1694 (12.7%) 3627 (13.4%) 4141 (13.8%) 3578 (12.9%) 1270 (19.2%)
Aspirin Use
 Yes 4047 (21.9%) 6340 (22.9%) 7861 (24.8%) 7326 (27.8%) 157 (28.5%) 3151 (23.6%) 6828 (25.2%) 7732 (25.8%) 6185 (22.4%) 1835 (27.7%)
History of colorectal testing
 Never 8850 (49.3%) 12,611 (46.7%) 14,467 (46.6%) 12,878 (49.9%) 281 (52.0%) 6432 (49.2%) 12,653 (47.8%) 13,452 (45.8%) 13,296 (49.0%) 3254 (51.7%)
Parental history of CRC
 Yes 1821 (9.9%) 2800 (10.1%) 3280 (10.4%) 2647 (10.0%) 48 (8.7%) 1327 (9.9%) 2698 (10.0%) 3131 (10.5%) 2858 (10.3%) 582 (8.8%)