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. 2021 Jul 24;9(4):e00843. doi: 10.1002/prp2.843

TABLE 3.

Determinants for the first switch to a second biological for IBD patients

No. cases

N = 136

No. controls

N = 459

OR (univariate)

95% CI

OR (multivariate)

95% CI

Median (IQR) age at index date 38.6 (31.8) 32.7 (31.9) 1.01 (0.99–1.02)
Gender
Males 61 (44.9%) 204 (44.4%) Ref
Females 75 (55.1%) 255 (55.6%) 0.97 (0.66–1.43)
TNFα dose escalation
No 91 (66.9%) 424 (92.4%) Ref
Yes 45 (33.1%) 35 (7.6%) 10.83 (5.51–21.26)* 8.22 (3.76–17.93)
Initiation/dose escalation immunomodulator
No 95 (69.9%) 415 (90.4%) Ref
Yes 41 (30.1%) 44 (9.6%) 4.45 (2.65–7.89)* 2.13 (1.04–4.34)
High‐dose corticosteroid
No 109 (80.2%) 440 (95.9%) Ref
Yes 27 (19.8%) 19 (4.1%) 8.12 (3.74–17.62)* 6.91 (2.81–17.01)
Serum concentration measurement
No 86 (63.2%) 405 (88.2%) Ref
Yes 50 (36.8%) 54 (11.8%) 6.55 (3.65–11.77) 5.44 (2.74–10.79)
*

p‐value <.1.