30-day readmission and/or death.
Using generalized logistic regression models we modeled the relationship between the final systolic
blood pressure measured during a hospitalization and 30-day readmission
or mortality. (Table 2) The adjusted odds of the outcome for each range of systolic
blood pressure was compared to the baseline-adjusted odds for the
systolic blood pressure range 120-140 mmHg (i.e. this range was treated
as the baseline reference for calculating the odds ratio). A systolic blood pressure below 120
mmHg the risk of adverse outcomes starts to increase and at a discharge
systolic blood pressure of 80 mmHg the OR of death/readmission is very
high. We can see an inflection in the unadjusted odds when the systolic
blood pressure rises beyond 140 mmHG (OR: 1.06). When the level of
systolic blood pressure is greater than 160 mmHG, there is a steep
inflection in the odds of adverse outcomes. (Table 2).