Table 3.

Comparison of IRRs with (adjusted) ORs from the studies of De Abajo et al. [5] and Williams et al. [18] (95% CI in brackets).

Group	IRR (this study)	Adjusted OR (De Abajo et al. [5])	OR(Williams et al. [18])
NSAID	–	3.7 (3.2, 4.4)	–
SSRI	1.2 (0.5, 2.8)	3.0 (2.1, 4.4)	1.6 (1.4, 1.7)
TCA	1	1.4 (1.1, 1.9).	1.7 (1.6, 1.9)
NSAID + SSRI	12.4 (3.2, 48.0)	15.6 (6.6, 36.6)	–
NSAID + TCA	2.5 (0.3, 20.3)	–	–