Table 5.

Poisson regression models estimating malignancy risk (Incidence rate ratio) in PsA compared with RA^* (Continued)

	Model 1	Model 2
History of medication exposure
non-methotrexate DMARD	1.00
methotrexate	1.55 (p=0.018)(1.08, 2.23)
anti-TNF	1.05 (p=0.692)(0.84, 1.31)
other Biologic	1.14 (p=0.513)(0.77, 1.69)
Current medication use
non-methotrexate DMARD without current or history of methotrexate or biologic		1.00
methotrexate, no current or prior biologic use		1.77 (p=0.087)(0.92, 3.40)
biologic, no current or prior methotrexate use		1.42 (p=0.427)(0.60, 3.34)
biologic with current or prior methotrexate use		1.29 (p=0.449)(0.67, 2.48)
non-methotrexate DMARD, prior methotrexate, but no current or history of biologic		1.60 (p=0.319)(0.64, 4.02)

^*Results shown as Incident rate ratios with 95% confidence intervals and p-values