Table I.

Patient demographics and comorbidities for patients who underwent total shoulder arthroplasty, based on MF-6 score.

Characteristic	Normal (MF-6 <3)		MF-6 ≥3		P value
	Number	Percent	Number	Percent
Total	8764	100.0	464	100.0
Age					.055
65-74	5043	57.5	246	53.0
≥75	3721	42.5	218	47.0
Body mass index (kg/m2)
<18.5	69	0.8	4	0.9	.272
18.5-29.9	4432	50.6	145	31.3	–
30.0-34.9	2323	26.5	127	27.4	<.001
35.0-39.9	1176	13.4	87	18.8	<.001
≥40.0	754	8.6	101	21.8	<.001
Gender					<.001
Female	5195	59.3	316	68.1
Male	3569	40.7	148	31.9
ASA classification					<.001
1-2	3298	37.6	25	5.4
≥3	5466	62.4	439	94.6
Current smoker					<.001
No	8227	93.9	406	87.5
Yes	537	6.1	58	12.5
Disseminated cancer					.786
No	8733	99.6	462	99.6
Yes	31	0.4	2	0.4
Open wound/wound infection					.002
No	8728	99.6	457	98.5
Yes	36	0.4	7	1.5
Chronic steroid use					<.001
No	8275	94.4	420	90.5
Yes	489	5.6	44	9.5
Bleeding disorders					<.001
No	8514	97.1	423	91.2
Yes	250	2.9	41	8.8
Preoperative anemia					<.001
No	6860	78.3	260	56.0
Yes	1742	19.9	197	42.5
Transfusion prior to surgery					<.001
No	8733	99.6	454	97.8
Yes	31	0.4	10	2.2
Operative duration (minutes)
0-79	2404	27.4	127	27.4	.754
80-128	4472	51.0	228	49.1	–
≥129	1888	21.5	109	23.5	.299

MF-6, Six-Item Modified Frailty Index; ASA, American Society of Anesthesiologists.

Bold P values indicate statistical significance with P < .05.