Table 1.

Baseline Characteristics and Outcomes of Recurrent Acute Ischemic Stroke Hospitalizations among Older Individuals with Obesity and Stroke Survivors with vs. without Prior Bariatric Surgery (2016–2019).

Baseline Demographics		Without PBS (n = 631, 685)	With PBS (n = 11,820)	p-value
Age in years (Median [IQR])		74 [69–80]	70 [67–74]	<0.001b
Sex (%)	Male	40.28	26.27	<0.001c
	Female	59.72	73.73
Race (%)	White	76.46	83.81	<0.001c
	Black	15.43	11.15
	Hispanic	6.88	3.76
	Asian or Pacific Islander	0.83	0.49
	Native American	0.39	0.80
Median Household Incomea (%)	1st: 0 to 25th Quartile	30.49	27.61	<0.001c
	2nd: 26th to 50th Quartile	27.71	27.35
	3rd: 51st to 75th Quartile	24.32	25.73
	4th: 76th to 100th Quartile	17.48	19.31
Payer Type (%)	Medicare	91.71	90.74	<0.001c
	Medicaid	1.32	0.51
Baseline Comorbidities
Hypertension (%)		83.59	83.21	0.259c
Hyperlipidemia (%)		68.20	61.59	<0.001c
Diabetes Mellitus (%)		60.05	52.24	<0.001c
Smoking (%)		36.39	37.48	0.014c
Prior Myocardial Infarction (%)		15.72	12.82	<0.001c
Peripheral Vascular Disease (%)		11.87	8.84	<0.001c
Valvular Disease (%)		3.55	3.89	0.044c
Drug Abuse (%)		1.08	1.61	<0.001c
Multivariable Analysis for Outcome		Odds Ratio (95 % C.I. LL – UL)
Unadjusted Odds of Recurrent Acute Ischemic Stroke		0.77 (0.69–0.86)
Adjusted Odds of Recurrent Acute Ischemic Stroke		0.77 (0.60–0.98)d

C.I. = Confidence Interval; LL = Lower Limits; UL = Upper Limits; a: household income estimated from national quartile for patient zip code; b: p-value <0.05 considered significant and estimated by Mann-Whitney-U test; c: p-value <0.05 considered significant and estimated by Pearson Chi-Square test; d: adjusted for age, sex, race, median household income, payer type, hypertension, hyperlipidemia, diabetes mellitus, smoking, prior myocardial infarction, peripheral vascular disease, valvular disease, drug abuse.