Table 2.

Weighted mean difference and 95% confidence interval of blood pressure by subgroup analysis.

Variables		N	Weighted Mean Difference	95% CI	I2	p-Value	Forest Plot
Systolic blood pressure
Overall systolic blood pressure (inclusive of children)		16	−2.655	(−3.758, −1.553)	98.32	<0.001	Figure S1
Overall systolic blood pressure (exclusive of children)		15	−2.509	(−3.630, −1.388)	98.42	<0.001	Figure S2
Diet subgroup	Vegan diet	11	−3.118	(−4.540, −1.696)	96.99	<0.001	Figure S3
	Lacto-ovo-vegetarian diet	5	−1.752	(−5.382, 1.878)	72.69	0.005
Diabetes subgroup	Participants with diabetes	8	−1.625	(−3.106, −0.144)	96.84	<0.001	Figure S4
	Participants without diabetes	8	−4.083	(−7.684, −0.482)	96.90	<0.001
Country	USA	11	−2.803	(−4.037, −1.569)	98.85	<0.001	Figure S5
	Australia	3	−2.075	(−9.859, 5.709)	83.24	0.003
	New Zealand	1	−4.000	(−6.352, −1.648)	N.A	N.A
	South Korea	1	1.000	(−3.306, 5.306)	N.A	N.A
Diastolic blood pressure
Overall diastolic blood pressure (inclusive of children)		16	−1.687	(−2.968, −0.407)	99.35	<0.001	Figure S6
Overall diastolic blood pressure (exclusive of children)		15	−1.654	(−2.958, −0.351)	99.39	<0.001	Figure S7
Diet subgroup	Vegan diet	11	−1.920	(−3.180, −0.661)	97.80	<0.001	Figure S8
	Lacto-ovo-vegetarian diet	5	−0.000	(0.000, 0.000)	0.0	0.432
Diabetes subgroup	Participants with diabetes	8	−1.838	(−3.304, −0.373)	98.46	<0.001	Figure S9
	Participants without diabetes	8	−1.242	(−2.551, 0.066)	57.48	0.021
Country	USA	11	−2.179	(−3.678, −0.680)	99.57	<0.001	Figure S10
	Australia	3	−0.302	(−2.912, 2.308)	0.0	0.468
	New Zealand	1	−1.000	(−2.176, 0.176)	N.A	N.A
	South Korea	1	1.100	(−1.501, 3.701)	N.A	N.A