Table 1.

Subject demographic data and comorbidities.

	Total subjects	AP non-users	AP users	P
		n = 2407 (%)	n = 2407 (%)
Age (year)				0.76
Mean (SD)	53.80 ± 13.37	53.86 ± 13.40	53.74 ± 13.38
Age				0.50
≤ 50 years	1919 (39.9)	948 (39.4)	971 (40.3)
>50 years	2895 (60.1)	1459 (60.6)	1436 (59.7)
Monthly income				0.80
Low	2206 (45.8)	1102 (45.8)	1104 (45.9)
Median	2487 (51.7)	1248 (51.8)	1239 (51.5)
High	121 (2.5)	57 (2.4)	64 (2.7)
Residential area				0.49
Urban	2752 (57.2)	1415 (58.8)	1455 (60.4)
Suburban	757 (15.7)	389 (16.2)	368 (15.3)
Rural	1305 (27.1)	603 (25.1)	584 (24.3)
CCI				0.21
Mean (SD)	4.58 (3.61)	4.73 (3.99)	4.42 (3.22)

AP, acupuncture; SD, standard deviation.