Traditional East Asian Herbal Medicine for Amyotrophic Lateral Sclerosis: A Scoping Review

Table 1

General characteristics of the included literature (N = 59).

Variables	Categories	n (%)
Publication year	1995–1999	4 (6.8)
	2000–2004	7 (11.9)
	2005–2009	6 (10.2)
	2010–2014	19 (32.2)
	2015–2019	23 (40.0)
Research methodology	Observational studies	28 (47.5)
	Case report	19 (32.2)
	Case series	6 (10.2)
	Retrospective study	2 (3.4)
	Prospective study	1 (1.7)
	Experimental studies	20 (33.9)
	Before-and-after study	12 (20.3)
	Randomized controlled trial	8 (13.6)
	Literature studies	11 (18.6)
	Narrative review	7 (11.9)
	Systemic review	3 (5.1)
	Meta-analysis	1 (1.7)
Country	China	39 (66.1)
	Korea	20 (33.9)
Language	Chinese	34 (57.6)
	Korean	14 (23.7)
	English	11 (18.6)