Table 1

Patient demographics by PROMIS score.

Demographic	Total (N = 119)	PROMIS ≥35 (n = 55)	PROMIS <35 (n = 64)		P Value^a
Age (mean + SD)	52.2 ± 10.7	51.7 ± 11.6	52.6 ± 10.0		0.619
Gender, n (%)					0.002
Female	55 (46.2%)	17 (31.0%)	38 (59.4%)
Male	64 (53.8%)	38 (69.0%)	26 (40.6%)
Body mass index, n (%)					0.002
Nonobese (<30 kg/m²)	62 (52.1%)	37 (67.3%)	25 (39.1%)
Obese (≥30 kg/m²)	57 (47.9%)	18 (32.7%)	39 (60.9%)
Smoking status, n (%)					0.996
Non-smoker	106 (89.1%)	49 (89.1%)	57 (89.1%)
Smoker	13 (10.9%)	6 (10.9%)	7 (10.9%)
Insurance coverage, n (%)					0.387
Private or WC	115 (96.6%)	54 (98.2%)	61 (95.3%)
Medicare/Medicaid	4 (3.4%)	1 (1.8%)	3 (4.7%)
Ageless CCI, mean ± SD	0.96 ± 1.0	0.84 ± 1.1	1.06 ± 1.0		0.233
Preoperative PHQ-9, mean ± SD	6.9 ± 6.6	5.4 ± 6.0	8.3 ± 6.8		0.018
Preoperative diagnoses, n (%)^b
Myocardial infarction	3 (2.5%)	2 (3.6%)	1 (1.6%)		0.472
Uncomplicated diabetes	10 (8.4%)	3 (5.5%)	7 (11.0%)		0.282
Complicated diabetes	2 (1.7%)	1 (1.8%)	1 (1.6%)		0.914
Hypertension	39 (32.8%)	16 (29.1%)	23 (36.0%)		0.428
Neurologic disease	2 (1.7%)	1 (1.8%)	1 (1.6%)		0.914
Arthritis	22 (18.5%)	7 (12%)	15 (23.4%)		0.133
Malignancy	12 (10.1%)	5 (9.1%)	7 (11.0%)		0.739

Boldface indicates statistical significance (P < 0.05).
aP value was calculated using Student t test (continuous), χ ² (categorical), or Fisher exact test (categorical).
bThere were no patients in our study with a recorded medical history of AIDS, paraplegia, congestive heart failure, peripheral vascular disease, metastatic disease, liver disease, renal failure, chronic obstructive pulmonary disease, or gastrointestinal bleeds.
CCI, Charlson Comorbidity Index; PROMIS, Patient-Reported Outcomes Measurement Information System; SD, standard deviation; WC, workers compensation.