Effects of celecoxib combined with duloxetine on chronic pain, depression, and anxiety in patients with knee osteoarthritis

Table 1 Baseline patient data, n (%)

Factor		Control group (n = 57)	Study group (n = 66)	χ2	P value
Sex
	Male	14 (24.56)	20 (30.3)	0.504	0.478
	Female	43 (75.44)	46 (69.7)
Age (year)
	≥ 65	31 (54.39)	30 (45.45)	0.976	0.323
	< 65	26 (45.61)	36 (54.55)
BMI (kg/m2)
	≥ 23	13 (22.81)	18 (27.27)	0.324	0.569
	< 23	44 (77.19)	48 (72.73)
History of hypertension
	Yes	20 (35.09)	29 (43.94)	1.000	0.317
	No	37 (64.91)	37 (56.06)
History of diabetes
	Yes	9 (15.79)	13 (19.7)	0.318	0.573
	No	48 (84.21)	53 (80.3)
Smoking history
	Yes	15 (26.32)	21 (31.82)	0.447	0.504
	No	42 (73.68)	45 (68.18)
Alcohol consumption history
	Yes	7 (12.28)	9 (13.64)	0.050	0.824
	No	50 (87.72)	57 (86.36)
Education level
	≥ junior high school	6 (10.53)	5 (7.58)	0.327	0.567
	< junior high school	51 (89.47)	61 (92.42)
Employment status
	On-the-job	9 (15.79)	13 (19.7)	0.318	0.573
	Retired	48 (84.21)	53 (80.3)

BMI: Body mass index.