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Table 3 30-day risk of a hospitalization with bowel obstruction (as defined by a hospital diagnosis code) in antipsychotic drug users and non-users

From: Atypical antipsychotic medications and hyponatremia in older adults: a population-based cohort study

  Events, no. (%)a Relative risk (95 % CI) Absolute risk increase (95 % CI), %
Antipsychotic users Antipsychotic non-usersb
(n = 58,008) (n = 58,008)
 Hospitalization with bowel obstruction 55 (0.09) 44 (0.08) 1.25 (0.84 to 1.86) 0.02 (−0.01 to 0.05)
  1. CI confidence interval
  2. aThe event rates and absolute risk differences are underestimated as the hospital-based diagnosis codes used to define the outcomes have high specificity but low sensitivity
  3. bAn antipsychotic non-users group was the referent