Table 3

Adjusted HRs of the obesity status on stroke-related mortalities and cardiovascular-event-related mortality

Variables	3 months		1 year		After 1 year
Variables	SHR	95% CI	SHR	95% CI	SHR	95% CI
Stroke-related mortality
Model 1*
Underweight	1.63	0.91 to 2.91	1.52	0.93 to 2.48	1.39	0.91 to 2.12
Normal weight	1.00		1.00		1.00
Overweight	0.68	0.42 to 1.11	0.70	0.47 to 1.03	0.73	0.54 to 0.99
Obese	1.01	0.65 to 1.57	0.81	0.56 to 1.18	0.76	0.56 to 1.03
Model 2†
Underweight	1.12	0.61 to 2.05	1.56	0.93 to 2.61	1.42	0.91 to 2.23
Normal weight	1.00		1.00		1.00
Overweight	0.85	0.55 to 1.34	0.84	0.55 to 1.26	0.83	0.61 to 1.15
Obese	0.87	0.56 to 1.34	0.92	0.61 to 1.38	0.82	0.58 to 1.14
Cardiovascular-event-related mortality
Model 1*
Underweight	1.23	0.70 to 2.16	1.15	0.71 to 1.86	1.08	0.72 to 1.62
Normal weight	1.00		1.00		1.00
Overweight	0.69	0.45 to 1.05	0.71	0.51 to 0.99	0.72	0.55 to 0.95
Obese	0.83	0.55 to 1.25	0.70	0.49 to 0.99	0.67	0.51 to 0.89
Model 2†
Underweight	1.12	0.62 to 2.05	1.05	0.63 to 1.77	0.98	0.63 to 1.53
Normal weight	1.00		1.00		1.00
Overweight	0.85	0.54 to 1.33	0.86	0.60 to 1.23	0.83	0.63 to 1.11
Obese	0.87	0.56 to 1.35	0.73	0.50 to 1.07	0.66	0.49 to 0.90

*Model 1 was adjusted for age, gender and smoking status.
†Model 2 adjusted the following covariates in addition to what were controlled in Model 1: comorbidities (diabetes, old stroke, atrial fibrillation, active cancer, anaemia, renal disease, liver disease, hypercholesterolaemia, depression, dementia, any complications, initial systolic blood pressure status, total cholesterol, initial glucose level and Charlson comorbidity index), enrolment year, stroke severity measured using the NIHSS score, treatment modalities (any thrombolysis, tissue plasminogen activator, intra-arterial thrombolysis, mechanical thrombectomy and stent insertion) and statin use.
NIHSS, National Institute of Health Stroke Scale; SHR, subdistribution hazard ratio.