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. 2018 Mar 29;13(3):e0195022. doi: 10.1371/journal.pone.0195022

Table 1. Comparison of CT use among ED visits and hospitalizations for patients with IBD with pharmaceutical coverage.

No CT (n = 105,782) CT (n = 38,365) Test Statistic(DF) Test Value p value
Age, mean (SD) 43.7 (18.5) 43.7 (16.1) t(144145) 0.09 0.92
Female (%) 61,171 (57.8) 21,753 (56.7) C2(1) 14.64 <0.001
Diagnosis
Crohn's Diagnosis (%)
46,455 (43.9) 17,360 (45.3) C2(2) 564.30 <0.001
Ulcerative Colitis (%) 20,852 (19.7) 5,525 (14.4)
Indeterminate Colitis (%) 38,475 (36.4) 15,480 (40.4)
Anti-TNF use at time of visit (%) 5,599 (5.3) 2,117 (5.5) C2(1) 2.82 0.09
Narcotic use in previous 90 days (%) 37,779 (35.7) 13,612 (35.5) C2(1) 0.67 0.41
Immunomodulator use (%) 8,180 (7.7) 2,833 (7.4) C2(1) 4.85 0.03
Steroid use in prior 90 days (%) 12,143 (11.5) 4,428 (11.5) C2(1) 0.10 0.74
Length of stay in days, mean (SD) 4.8 (6.1) 5.9 (6.9) t(102968) -25.16 <0.001