Use of Chinese Medicine and Subsequent Surgery in Women with Uterine Fibroid: A Retrospective Cohort Study

Table 1

Comparison of socio-demographic factors and co-morbidities between Chinese medicine (CM) users and nonusers in patients with uterine fibroids.

	CM Nonusers; 𝑁=4452		CM Users; 𝑁=12238		Total; 𝑁=16690		𝑃 value^a
	𝑛	%	𝑛	%	𝑛	%
Age, years							<0.0001
<20	18	0.40	110	0.90	128	0.77
20–29	268	6.02	1151	9.41	1419	8.50
30–39	1120	25.2	3603	29.4	4723	28.3
40–49	2394	53.8	5643	46.1	8037	48.2
≥50	652	14.7	1731	14.1	2383	14.3
Mean ± SD	42.9 ± 8.20		41.6 ± 8.84		41.9 ± 8.69		<0.0001
Income, US$ per month							0.86
<564.3	1178	26.5	3276	26.8	4454	26.7
564.3–656.5	868	19.5	2438	19.9	3306	19.8
656.6–779.6	1293	29.0	3514	28.7	4807	28.8
≥779.7	1113	25.0	3010	24.6	4123	24.7
Occupational status							0.009
White collar	2454	55.1	7015	57.3	9469	56.8
Blue collar	1500	33.7	4016	32.8	5516	33.1
Others	498	11.2	1202	9.83	1700	10.2
Area							<0.0001
Northern Taiwan	2288	51.4	5505	45.0	7793	46.7
Central Taiwan	604	13.6	2353	19.2	2957	17.7
Southern Taiwan	1364	30.6	3852	31.5	5216	31.3
Eastern Taiwan and offshore islands	196	4.40	523	4.28	719	4.31
Comorbidity
Excessive menstruation	782	17.6	2718	22.2	3500	21.0	<0.0001
Iron-deficiency anemia	473	10.6	1549	12.7	2022	12.1	0.0004
Dysmenorrhea	555	12.5	2571	21.0	3126	18.7	<0.0001
Infertility	9	0.20	94	0.77	103	0.62	<0.0001

^aChi-square test and 𝑡-test.