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Table 1 Participants’ characteristics stratified by categories of percentage change in BMI

From: Longitudinal associations between BMI change and the risks of colorectal cancer incidence, cancer-relate and all-cause mortality among 81,388 older adults

 TotalBMI decreaseStable BMI (+/−  2.5%)BMI increase
 ≥15%10–14.9%5–9.9%2.5–4.9%2.5–4.9%5–9.9%10–14.9%≥15%
All81,3882783 (3.42)4128 (5.07)10,122 (12.44)9098 (11.18)22,187 (27.26)10,511 (12.91)12,978 (15.95)5471 (6.72)4110 (5.05)
Percentage change of BMI, Mean ± SD1.02 ± 9.58−21.19 ± 6.36−12.12 ± 1.41−7.14 ± 1.41−3.62 ± 0.710.04 ± 1.363.57 ± 0.757.14 ± 1.4412.11 ± 1.4024.23 ± 14.05
Sex
 Men38,250 (47.00)963 (34.60)1593 (38.59)4823 (47.65)4525 (49.74)11,363 (51.21)5144 (48.94)5999 (46.22)2313 (42.28)1527 (37.15)
 Women43,138 (53.00)1820 (65.40)2535 (61.41)5299 (52.35)4573 (50.26)10,824 (48.79)5367 (51.06)6979 (53.78)3158 (57.72)2583 (62.85)
Age at study entry (Year), Mean ± SD61.92 ± 5.1463.18 ± 5.5163.18 ± 5.4262.68 ± 5.3062.38 ± 5.2361.81 ± 5.1061.54 ± 5.0561.36 ± 4.9361.11 ± 4.8661.05 ± 4.83
  ≤ 5930,558 (37.55)836 (30.04)1237 (29.97)3292 (32.52)3087 (33.93)8479 (38.22)4120 (39.20)5351 (41.23)2361 (43.15)1795 (43.67)
 60–6425,825 (31.73)843 (30.29)1222 (29.60)3082 (30.45)2910 (31.99)7043 (31.74)3384 (32.19)4252 (32.76)1775 (32.44)1314 (31.97)
 65–6916,778 (20.61)622 (22.35)1031 (24.98)2425 (23.96)2055 (22.59)4539 (20.46)2050 (19.50)2377 (18.32)947 (17.31)732 (17.81)
  ≥ 708227 (10.11)482 (17.32)638 (15.46)1323 (13.07)1046 (11.50)2126 (9.58)957 (9.10)998 (7.69)388 (7.09)269 (6.55)
Ethnic group
 White (non-Hispanic)74,201 (91.17)2513 (90.30)3701 (89.66)9127 (90.17)8244 (90.61)20,172 (90.92)9617 (91.49)11,938 (91.99)5075 (92.76)3814 (92.80)
 Black (non-Hispanic)2511 (3.09)131 (4.71)189 (4.58)353 (3.49)280 (3.08)646 (2.91)271 (2.58)359 (2.77)166 (3.03)116 (2.82)
 Others (i.e., Asian, pacific islander, etc.)4676 (5.75)139 (4.99)238 (5.77)642 (6.34)574 (6.31)1369 (6.17)623 (5.93)681 (5.25)230 (4.20)180 (4.38)
Educational level
 High school graduate or less22,383 (27.50)898 (32.27)1262 (30.57)2857 (28.23)2477 (27.23)5803 (26.15)2632 (25.04)3600 (27.74)1593 (29.12)1261 (30.68)
 Some college27,943 (34.33)987 (35.47)1448 (35.08)3540 (34.97)3149 (34.61)7365 (33.20)3604 (34.29)4453 (34.31)1897 (34.67)1500 (36.50)
 College graduate14,696 (18.06)429 (15.42)659 (15.96)1797 (17.75)1613 (17.73)4260 (19.20)2019 (19.21)2355 (18.15)944 (17.25)620 (15.09)
 Postgraduate16,229 (19.94)462 (16.60)751 (18.19)1916 (18.93)1842 (20.25)4713 (21.24)2241 (21.32)2556 (19.69)1026 (18.75)722 (17.57)
 Unknown137 (0.17)7 (0.25)8 (0.19)12 (0.12)17 (0.19)46 (0.21)15 (0.14)14 (0.11)11 (0.20)7 (0.17)
Family annual income
  < $20, 0008819 (10.84)519 (18.65)643 (15.58)1198 (11.84)934 (10.27)1987 (8.96)964 (9.17)1288 (9.92)673 (12.30)613 (14.91)
 $20, 000–49, 00029,878 (36.71)1018 (36.58)1571 (38.06)3758 (37.13)3399 (37.36)7844 (35.35)3757 (35.74)4872 (37.54)2071 (37.85)1588 (38.64)
 $50, 000–99, 00021,274 (26.14)561 (20.16)901 (21.83)2459 (24.29)2433 (26.74)6142 (27.68)3001 (28.55)3461 (26.67)1353 (24.73)963 (23.43)
  ≥ $100, 0007028 (8.64)127 (4.56)243 (5.89)783 (7.74)774 (8.51)2249 (10.14)1034 (9.84)1120 (8.63)451 (8.24)247 (6.01)
 Not answered14,389 (17.68)558 (20.05)770 (18.65)1924 (19.01)1558 (17.12)3965 (17.87)1755 (16.70)2237 (17.24)923 (16.87)699 (17.01)
Marital status
 Married/cohabiting63,693 (78.26)2070 (74.38)3200 (77.52)8006 (79.10)7288 (80.11)17,833 (80.38)8308 (79.04)10,097 (77.80)4017 (73.42)2874 (69.93)
 Single17,586 (21.61)709 (25.48)922 (22.34)2104 (20.79)1799 (19.77)4319 (19.47)2193 (20.86)2867 (22.09)1442 (26.36)1231 (29.95)
 Missing109 (0.13)4 (0.14)6 (0.15)12 (0.12)11 (0.12)35 (0.16)10 (0.10)14 (0.11)12 (0.22)5 (0.12)
Physical active level compared with 10 years ago
 About the same32,228 (39.60)845 (30.36)1443 (34.96)4173 (41.23)3981 (43.76)9862 (44.45)4471 (42.54)4705 (36.25)1721 (31.46)1027 (24.99)
 Less active41,245 (50.68)1482 (53.25)2082 (50.44)4655 (45.99)4140 (45.50)10,218 (46.05)5212 (49.59)7237 (55.76)3403 (62.20)2816 (68.52)
 More active6788 (8.34)399 (14.34)530 (12.84)1122 (11.08)843 (9.27)1831 (8.25)692 (6.58)880 (6.78)282 (5.15)209 (5.09)
 Not answered1127 (1.38)57 (2.05)73 (1.77)172 (1.70)134 (1.47)276 (1.24)136 (1.29)156 (1.20)65 (1.19)58 (1.41)
Family history of cancer in their first relatives
 No35,795 (43.98)1195 (42.94)1777 (43.05)4457 (44.03)3997 (43.93)9853 (44.41)4580 (43.57)5797 (44.67)2363 (43.19)1776 (43.21)
 Yes45,386 (55.76)1582 (56.85)2342 (56.73)5644 (55.76)5070 (55.73)12,280 (55.35)5900 (56.13)7149 (55.09)3096 (56.95)2323 (56.52)
 Missing207 (0.25)6 (0.22)9 (0.22)21 (0.21)31 (0.34)54 (0.24)31 (0.29)32 (0.25)12 (0.22)11 (0.27)
Smoking status at study entry
 Never smoker39,837 (48.95)1336 (48.01)1999 (48.43)4988 (49.28)4553 (50.04)11,148 (50.25)5321 (50.62)6287 (48.44)2457 (44.91)1748 (42.53)
 Current smoker34,725 (42.67)1172 (42.11)1746 (42.30)4302 (42.50)3917 (43.05)9485 (42.75)4433 (42.17)5579 (42.99)2386 (43.61)1705 (41.48)
 Former smoker6816 (8.37)274 (9.85)383 (9.28)829 (8.19)626 (6.88)1554 (7.00)756 (7.19)1110 (8.55)628 (11.48)656 (15.96)
Missing10 (0.01)1 (0.04)03 (0.03)2 (0.02)01 (0.01)2 (0.02)01 (0.02)
BMI at study entry (kg/m2), Mean ± SD27.21 ± 4.7831.31 ± 6.6629.21 ± 5.3928.07 ± 4.9227.22 ± 4.5726.79 ± 4.4326.49 ± 4.3326.76 ± 4.3726.75 ± 4.5726.49 ± 5.04
  < 18.5 kg/m2515 (0.63)12 (0.29)52 (0.51)31 (0.34)111 (0.50)56 (0.53)63 (0.49)33 (0.60)157 (3.82)
 18.5–24.9 kg/m227,317 (33.56)402 (14.44)861 (20.86)2688 (26.56)2901 (31.89)8055 (36.31)4123 (39.23)4668 (35.97)2067 (37.78)1552 (37.76)
 25–29.9 kg/m234,822 (42.79)955 (34.32)1684 (40.79)4443 (43.89)4136 (45.46)9626 (43.39)4442 (42.26)5773 (44.48)2272 (41.53)1491 (36.28)
  ≥ 30 kg/m218,734 (23.02)1426 (51.24)1571 (38.06)2939 (29.04)2030 (22.31)4395 (19.18)1890 (17.98)2474 (19.06)1099 (20.09)910 (22.14)
BMI at follow-up (kg/m2), Mean ± SD27.40 ± 5.0324.57 ± 5.0625.66 ± 4.7426.06 ± 4.5626.23 ± 4.3926.80 ± 4.4427.43 ± 4.5028.67 ± 4.7229.99 ± 5.1432.77 ± 6.58
  < 18.5 kg/m2759 (0.93)230 (8.26)116 (2.81)170 (1.68)87 (0.96)113 (0.51)23 (0.22)17 (0.13)2 (0.04)1 (0.02)
 18.5–24.9 kg/m226,555 (32.63)1430 (51.38)1939 (46.97)4411 (43.58)3766 (41.39)8117 (36.58)3192 (30.37)2607 (20.09)778 (14.22)315 (7.66)
 25–29.9 kg/m233,972 (41.74)737 (26.48)1404 (33.94)3855 (39.09)3778 (41.53)9564 (43.11)4853 (46.17)6262 (48.25)2290 (41.86)1232 (29.98)
  ≥ 30 kg/m220,102 (24.70)386 (13.87)672 (16.28)1686 (16.66)1467 (16.12)4393 (19.80)2443 (23.24)4092 (31.53)2401 (43.89)2562 (62.34)
Arm
 Screening41,703 (51.24)1444 (51.89)2134 (51.70)5220 (51.57)4698 (51.64)11,457 (51.64)5374 (51.13)6616 (50.98)2711 (49.55)2049 (49.85)
 Usual care39,685 (78.76)1339 (48.11)1994 (48.30)4902 (48.43)4400 (48.36)10,730 (48.36)5137 (48.87)6362 (49.02)2760 (50.45)2061 (50.15)
Chronic diseases at study entry/follow-up
 Hypertension40,115 (49.29)1571 (56.45)2153 (52.16)5013 (49.53)4282 (47.07)10,304 (46.44)4981 (47.39)6509 (50.15)2929 (53.54)2373 (57.74)
 Heart attack6919 (8.50)331 (11.89)437 (10.59)938 (9.27)728 (8.00)1655 (7.46)796 (7.57)1067 (8.22)503 (9.19)464 (11.29)
 Stroke4177 (5.13)250 (8.98)318 (7.70)625 (6.17)461 (5.07)917 (4.13)456 (4.34)595 (4.58)293 (5.36)262 (6.37)
 Emphysema2742 (3.37)145 (5.21)188 (4.55)357 (3.53)263 (2.89)573 (2.58)289 (2.75)404 (3.11)233 (4.26)290 (7.06)
 Diabetes10,463 (12.86)683 (24.54)865 (20.95)1755 (17.34)1164 (12.79)2309 (10.41)964 (9.17)1346 (10.37)663 (12.12)714 (17.37)
 Arthritis37,895 (46.56)1525 (54.80)2117 (51.28)4785 (47.27)4086 (44.91)9864 (44.46)4643 (44.17)5977 (46.05)2717 (49.66)2181 (53.07)
 Osteoporosis12,233 (15.03)559 (20.09)700 (16.96)1470 (14.52)1288 (14.16)3111 (14.02)1513 (14.39)1908 (14.70)944 (17.25)740 (18.00)
  1. Data were presented as frequency (percentage) unless specified. BMI: body mass index; SD: standard deviation