Table 1.

Patient demographics

	Total		Patients with QST		Patients without QST		Pa
	(N = 100)		(n = 60)		(n = 40)
	Summary statistics
Age (years)
Mean (SD)	56.00 (12.35)		56.03 (12.66)		55.97 (12.04)		0.981
Median (range)	57.20 (19.55–82.67)		57.61 (19.55–82.67)		56.99 (27.12–81.82)
BMI
Mean (SD)	27.99 (6.03)		28.57 (5.96)		27.12 (6.12)		0.243
Median (range)	26.94 (14.50–46.81)		27.06 (19.91–46.81)		26.63 (14.50–42.89)
	n	%	n	%	n	%
Age (years)
<60	63	63	38	63.3	25	62.5	0.496
≥60	37	37	22	36.7	15	37.5
Sex
Male	64	64	40	66.7	24	60	0.735
Female	36	36	20	33.3	16	40
Race
Non-Hispanic white	63	63	38	63.3	25	62.5	0.933
Other	37	37	22	36.7	15	37.5
Education
High school or less	49	49	31	51.7	18	45	0.513
College or higher	51	51	29	48.3	22	55
Baseline ECOG PS
0	70	70	42	70	28	70	0.607
1	25	25	14	23.3	11	27.5
2	5	5	4	6.7	1	2.5
Cancer stage
II	10	10	6	10	4	10	0.558
III	37	37	20	33.3	17	42.5
IV	52	52	34	56.7	18	45
Comorbid conditions, n
0	78	78	48	80	30	75	0.554
≥1	22	22	12	20	10	25
Previous therapy
Yes	79	79	47	78.3	32	80	0.841
No	21	21	13	21.7	8	20
Previous radiation
Yes	8	8	4	6.7	4	10	0.547
No	92	92	56	93.3	36	90
Previous surgery
Yes	79	79	47	78.3	32	80	0.841
No	21	21	13	21.7	8	20
Previous non–platin-based chemotherapy
Yes	10	10	4	6.7	6	15	0.174
No	90	90	56	93.3	34	85
Baseline opioid use
Yes	28	28	16	26.7	12	30	0.716
No	72	72	44	73.3	28	70

Abbreviations: BMI = body mass index; ECOG PS = Eastern Cooperative Oncology Group performance status; SD = standard deviation.

^aComparison between patients with and without QST. We conducted t tests for continuous variables and the Fisher exact test for categorized variables.