Population based study of noncardiac chest pain in southern Chinese: Prevalence, psychosocial factors and health care utilization

Table 1 Demographic data of study subjects (n = 2209)

		aCardiac	aNo
	aNCCP	chest pain	chest pain
	(n = 307)	(n = 147)	(n = 1755)
Mean age	38 ± 14c	42 ± 14	41 ± 14
Gender (M/F)	156/151c	58/89	723/1032
Smoking (%)	20.6	16.7	16.0
Alcohol (%)	10.2d	10.9	6.8
Aspirin user (%)	11.2	20.6b	7.7
NSAID user (%)	11.6c	13.9b	6.0
Coffee (%)	22.7	14.0	18.7
Education (%)
Primary or below	37 (13)	28 (21)	290 (18)
Secondary or matriculation	171 (61)	88 (65)	920 (57)
Tertiary	72 (26)	20 (15)	392 (25)
Total	280 (100)	136 (100)	1602 (100)
Monthly income in US$ (%)
None	90 (33)	60 (44)	539 (35)
1280 or below	78 (29)	34 (25)	364 (24)
1280 – 1920	39 (14)	22 (16)	254 (16)
1920 – 3200	40 (15)	10 (7)	228 (15)
> 3200	25 (9)	10 (7)	160 (10)
Total	272 (100)	136 (100)	1545 (100)
Occupation (%)
Professional and managerial	45 (16)	17 (13)	262 (16)
Technical worker	37 (13)	14 (10)	175 (11)
and craftsmen
Clerical work	29 (10)	16 (12)	243 (15)
Service and sales	32 (12)	11 (8)	157 (10)
Agriculture and others	18 (7)	8 (6)	87 (6)
Non-technical worker	8 (3)	4 (3)	33 (2)
Others (students, housewife,	109 (39)	66 (49)	637 (40)
retired and unemployed)
Total	278 (100)	136 (100)	1594 (100)

^aThe total in each individual cell may be smaller because of subject refusal,

^bP < 0.001 when compared to subjects with no chest pain,

^cP < 0.01 when compared to subjects with no chest pain,

^dP < 0.05 when compared to subjects with no chest pain.