Body Mass Index and 1-Year Unplanned Readmission in Chinese Patients with Acute Myocardial Infarction: A Retrospective Cohort Study

Table 4

The results of BMI and readmission of AMI using two-piecewise linear regression.

Inflection point of BMI (kg/m^2)	Effect size	95% CI	value
＜29.3	0.9	0.7 to 1.2	0.530
≥29.3	2.8	1.3 to 5.8	0.008

Effect: readmission of AMI; cause: BMI. Adjusted: age, gender, TC, triglyceride, HDL-C, LDL-C, PT, APTT, INR, creatinine, HGB, LVEF, discharge medications, marital status, educational level, COPD, diabetes mellitus, heart failure, history of ischemic stroke, history of hemorrhagic stroke, arrhythmia, and hypertension.