Table 4.

Comparison of outcomes between the current and previous studies with a larger sample size (N ≥ 30).

Author, year	N	Rate of improvement rate in dominant tremor scores
		6 months	1 year	2 years
The study	48	55.1%	52.4%	49.7%
Meng et al., 2018	37	No data	42.4%	43.4%
Chang et al., 2018	76	56.6%	55.0%	55.6%
Elias et al., 2016	56	44.0%	39.8%	No data