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. Author manuscript; available in PMC: 2017 Jul 1.
Published in final edited form as: J Stroke Cerebrovasc Dis. 2016 Apr 8;25(7):1683–1687. doi: 10.1016/j.jstrokecerebrovasdis.2016.03.046

Table 2.

Risk of Intracerebral Hemorrhage soon after Emergency Department Diagnosis of Hypertension*

Model Odds Ratio (95% CI)
Primary analysis 1.33 (0.96-1.84)
Subgroup analyses
    Malignant essential hypertension† 1.50 (0.17-17.96)
    Hypertension diagnosis besides malignant hypertension 1.32 (0.96-1.84)
    Age ≥ 60 years 1.90 (1.20-3.06)
    Age < 60 years 0.90 (0.56-1.44)
    Sole discharge diagnosis of hypertension 0.69 (0.36-1.31)
    Concomitant secondary discharge diagnoses 1.70 (1.16-2.53)

Abbreviations: CI, confidence interval.

*

Mantel-Haenszel estimator for matched data was used to compare each patient's risk of ICH during the 4-week period soon after an ED visit with a primary discharge diagnosis of hypertension (days 8-38 or cohort period) with the risk of ICH in the same patient during the 4-week period one year later (days 373-403 or crossover period).

†

Identified by International Classification of Diseases, 9th Revision, Clinical Modification code 401.0.