http://www.bmj.com/content/351/bmj.h3517
- Ju-Young Shin, director1,
- Mi-Ju Park, senior researcher1,
- Shin Haeng Lee, researcher1,
- So-Hyun Choi, researcher1,
- Mi-Hee Kim, researcher1,
- Nam-Kyong Choi, research professor2,
- Joongyub Lee, research professor2,
- Byung-Joo Park, professor3
- Correspondence to: B-J Park bjpark@snu.ac.kr
- Accepted 16 June 2015
Abstract
Objective
To define the risk of intracranial haemorrhage among patients treated
with antidepressants and non-steroid anti-inflammatory drugs (NSAIDs),
compared with the risk among those treated with antidepressants without
NSAIDs.
Design Retrospective nationwide propensity score matched cohort study.
Setting Korean nationwide health insurance database between 1 January 2009 and 31 December 2013.
Participants
Patients who began receiving antidepressants for the first time (index
date) without a history of having received a prescription for
antidepressants during the preceding year. Patients who had been
diagnosed as having cerebrovascular diseases within a year before the
index date were excluded.
Main outcome measure
Time to first hospital admission with intracranial haemorrhage within
30 days after drug use. Matched Cox regression models were used to
compare the risk of intracranial haemorrhage among patients who were
treated with antidepressants with and without NSAIDs, after propensity
score matching with a 1:1 ratio.
Results
After propensity score estimation and matching in a 1:1 ratio, the
cohort used in the analysis included 4 145 226 people. The 30 day risk
of intracranial haemorrhage during the entire study period was higher
for combined use of antidepressants and NSAIDs than for use of
antidepressants without NSAIDs (hazard ratio 1.6, 95% confidence
interval 1.32 to 1.85). No statistically meaningful differences were
found in risk of intracranial haemorrhage between the antidepressant
drug classes.
Conclusions Combined use
of antidepressants and NSAIDs was associated with an increased risk of
intracranial haemorrhage within 30 days of initial combination.
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