Table 3.

Subgroup analyses based on various criteria for diastolic blood pressure.

Subgroup	n	MD (95% CI)	Heterogeneity (%)	P value
Total sample size
≤80	6	−7.31 [−10.82, −3.79]	94	P < 0.00001
>80	4	−10.21 [−16.56, −3.85]	96	P < 0.00001
Intervention time
≤15 days	4	−6.54 [−10.37, −2.70]	86	P < 0.00001
>15 days	5	−8.04 [−12.14, −3.94]	96	P < 0.00001
Control type
AP + AHDs vs. AHDs	7	−8.08 [−11.82, −4.33]	95	P < 0.00001
AP vs. no intervention	2	−9.72 [−11.04, −8.40]	0	P=0.71

AP: Auricular acupressure; AHDs: Antihypertensive drugs.