Decreased risk of acute myocardial infarction in stroke patients receiving acupuncture treatment: a nationwide matched retrospective cohort study

Table 3 Number of acupuncture treatments and risk of acute myocardial infarction in stroke patients

Acupuncture treatment	Number	Events	Person-years	Incidence^b	HR	(95 % CI)^a
Numbers of packages
0	46950	2978	265756	11.2	1.00	(reference)
≥1	23475	1054	106663	9.9	0.86	(0.80–0.93)
≥2	16789	733	81701	9.0	0.79	(0.73–0.86)
≥3	13236	550	66789	8.2	0.73	(0.67–0.80)
≥4	10946	449	56537	7.9	0.71	(0.64–0.78)
≥5	9361	374	49103	7.6	0.68	(0.61–0.76)
≥6	8117	330	43027	7.7	0.69	(0.62–0.77)
≥7	7150	276	38333	7.2	0.65	(0.58–0.74)
≥8	6341	249	34381	7.2	0.66	(0.58–0.75)
≥9	5715	220	31218	7.0	0.64	(0.56–0.74)
≥10	5147	199	28312	7.0	0.64	(0.56–0.74)
≥11	4731	184	26153	7.0	0.64	(0.55–0.74)
≥12	4335	169	24206	7.0	0.64	(0.55–0.75)
≥13	3994	151	22417	6.7	0.62	(0.52–0.73)
≥14	3706	143	20854	6.9	0.63	(0.53–0.77)
≥15	3455	130	19545	6.7	0.61	(0.51–0.73)

CI confidence interval, HR hazard ratio
^aAdjusted for age, sex, low income, subtypes of stroke, hypertension, diabetes, mental disorders, hyperlipidemia, cardiac arrhythmia, traumatic brain injury, Parkinson’s disease, depression, Alzheimer’s disease, obesity, malignant brain tumors, smoking cessation, rehabilitation, anticoagulant, anti-platelet agents, lipid-lowering agents, admission to intensive care unit, neurosurgery, and lengths of hospital stay. P value (Cochran-Armitage test) <0.0001
^bPer 1000 person-years

ISSN: 2662-7671