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. 2021 Dec 23;20(6):e1263–e1282. doi: 10.1016/j.cgh.2021.12.026

Supplementary Table 2.

Basic Characteristics of Vaccinated Individuals With and Without IBD and Unvaccinated Individuals With and Without IBD in Unmatched Cohort


Not vaccinated
Vaccinated
P value SMD
IBD (N = 4890) Non-IBD (N = 23,356) P value SMD IBD (N = 12,109) Non-IBD (N = 31,427)
Age (y) 52 ± 24 51 ± 23 <.001 0.054 48 ± 18 48 ± 17 .026 0.024
Age group (y) <.001 0.155 <.001 0.066
 <18 279 (5.7%) 990 (4.2%) 138 (1.1%) 298 (0.9%)
 18–39 1451 (30%) 7553 (32%) 4008 (33%) 10,499 (33%)
 40–49 838 (17%) 3723 (16%) 2262 (19%) 6400 (20%)
 50–59 626 (13%) 3140 (13%) 2165 (18%) 5811 (19%)
 60–69 426 (8.7%) 2609 (11%) 1737 (14%) 4207 (13%)
 70–79 430 (8.8%) 2216 (9.5%) 1263 (10%) 3016 (10%)
 80+ 840 (17.2%) 3125 (13%) 536 (4.4%) 1196 (3.8%)
Sex, male 2500 (51%) 12,256 (53%) .088 0.027 6030 (50%) 15,372 (49%) .1 0.018
Disease duration (y) 11 (5.7–17) 12 (6.1–18)
Weeks from second vaccine 21 (18–23) 20 (17–22) <.001 0.21
BMI category <.001 0.409 <.001 0.502
 Overweight (25–29.9 kg/m2) 174 (3.6%) 253 (1.1%) 734 (6.1%) 736 (2.3%)
 Obese (30–39.99 kg/m2) 196 (4.0%) 538 (2.3%) 930 (7.7%) 2096 (6.7%)
 Severe obesity (>40 kg/m2) 67 (1.4%) 313 (1.3%) 330 (2.7%) 1184 (3.8%)
Pregnancy 117 (2.4%) 438 (1.9%) .02 0.036 199 (1.6%) 623 (2.0%) .022 0.025
Treatment over last year
 Anti-TNF 0 (0%) 0 (0%) 1 <0.001 452 (3.7%) 0 (0%) <.001 0.519
 Corticosteroids 167 (3.4%) 0 (0%) <.001 0.266 105 (0.9%) 0 (0%) <.001 0.278
 Immunomodulators 187 (3.8%) 0 (0%) <.001 0.282 217 (1.8%) 0 (0%) <.001 0.336
 Mesalamine 553 (11%) 0 (0%) <.001 0.505 738 (6.1%) 0 (0%) <.001 0.386
 Vedolizumab 88 (1.8%) 0 (0%) <.001 0.191 122 (1.0%) 0 (0%) <.001 0.292
 Ustekinumab 55 (1.1%) 0 (0%) <.001 0.151 76 (0.6%) 0 (0%) <.001 0.213
 Tofacitinib 11 (0.2%) 0 (0%) <.001 0.067 9 (0.1%) 0 (0%) <.001 0.096
IBD surgery ever 736 (15%) 0 (0%) <.001 0.595 1689 (14%) 0 (0%) <.001 0.569
IBD hospitalization ever 2668 (55%) 0 (0%) <.001 1.55 5909 (49%) 0 (0%) <.001 1.381
Corticosteroids use ever 2705 (55%) 0 (0%) <.001 1.574 6922 (57%) 0 (0%) <.001 1.634
Preexisting conditions scorea <.001 0.461 <.001 0.145
 0 2053 (42%) 14988 (64%) 4922 (41%) 14,761 (47%)
 1 1142 (23%) 3584 (15%) 3412 (28%) 8545 (27%)
 2 571 (12%) 1712 (7.3%) 1664 (14%) 3756 (12%)
 3 367 (7.5%) 1180 (5.1%) 935 (7.7%) 2109 (6.7%)
 4+ 757 (16%) 1892 (8.1%) 1176 (10%) 2256 (7.2%)
Preexisting conditions
 Cancer 250 (5.1%) 766 (3.3%) <.001 0.092 582 (4.8%) 1201 (3.8%) <.001 0.048
 Chronic kidney disease 399 (8.2%) 942 (4%) <.001 0.173 578 (4.8%) 922 (2.9%) <.001 0.096
 Chronic obstructive pulmonary disease 382 (7.8%) 854 (3.7%) <.001 0.179 548 (4.5%) 1123 (3.6%) <.001 0.048
 Heart conditions 857 (18%) 2373 (10%) <.001 0.214 1314 (11%) 2728 (8.7%) <.001 0.073
 Organ transplant 13 (0.3%) 24 (0.1%) .008 0.038 29 (0.2%) 34 (0.1%) .002 0.032
 Sickle cell 0 (0%) 0 (0%) 1 <0.001 0 (0%) 0 (0%) 1 <0.001
 Type II diabetes 705 (14%) 2461 (11%) <.001 0.118 1641 (14%) 3954 (13%) .007 0.029
 Asthma 1038 (21%) 2385 (10%) <.001 0.306 2717 (22%) 5474 (17%) <.001 0.126
 Cerebrovascular disease 527 (11%) 1446 (6.2%) <.001 0.165 927 (7.7%) 1932 (6.1%) <.001 0.06
 Other respiratory disease 106 (2.2%) 126 (0.5%) <.001 0.141 186 (1.5%) 279 (0.9%) <.001 0.059
 Hypertension 1427 (29%) 4573 (20%) <.001 0.225 3234 (27%) 8315 (27%) .606 0.006
 Immunocompromised state 19 (0.4%) 59 (0.3%) .134 0.024 40 (0.3%) 73 (0.2%) .09 0.019
 Type I diabetes 115 (2.4%) 371 (1.6%) <.001 0.055 252 (2.1%) 540 (1.7%) .012 0.027
 Liver disease 513 (11%) 1188 (5.1%) <.001 0.203 1634 (14%) 3309 (11%) <.001 0.091
 Thalassemia 48 (1.0%) 96 (0.4%) <.001 0.069 108 (0.9%) 247 (0.8%) .297 0.012

NOTE. Count (%), mean ± standard deviation, or medians (IQR) are presented as appropriate.

BMI, body mass index.

a

Number of preexisting conditions defined by the Centers for Disease Control as risk factors (Appendix 1).