Table 2.

Univariate analysis comparing factors related to therapeutic drug monitoring use

Variable	OR	95% CI
Practice setting
Tertiary hospital	1
Teaching hospital	2.6	0.71 to 9.8
Private practice	0.16	0.01 to 1.8
Grade
Registrar (gastroenterology)	1.5	0.3 to 7.2
IBD nurse specialist	2.6	0.7 to 10
Years in practice
<1	0.83	0.07 to 9.1
1–4	0.52	0.12 to 2.2
5–9	2.53	0.4 to 16.1
10–19	3.41	0.5 to 21.5
>20	4.14	0.4 to 41.8
Patients with IBD (n)
11–25	7.8	1.5 to 41.4
26–50	11.7	2.1 to 65.7
>50	45.7	7.6 to 275.4

IBD, inflammatory bowel disease.