Table 2.

Treatment methods used.

Study	Dosage form	Intervention
		T	C
Hu et al., 2012 [23]	Decoction	Mild: phlegm-eliminating and snore-stoppingdecoction + health guidance Moderate and Severe: phlegm-eliminatingand snore-stopping Decoction + CPAP + healthguidance	Mild: Health guidance Moderate and severe:CPAP + health guidance
Wang et al., 2013 [24]	Granule	Erchen snoring Granule + health guidance	Health guidance
Chen et al., 2015 [25]	Granule	Jiawei ditan decoction + health guidance	Health guidance
Feng et al., 2015 [26]	Decoction	Jianpi huatan formula + health guidance	Health guidance
Lv et al., 2017 [27]	Decoction	Huatan Zhihan decoction + CPAP + health guidance	CPAP + Health guidance
Liu et al., 2017 [28]	Decoction	Snoring I + CPAP	CPAP
Gui et al., 2017 [29]	Decoction	Modified huatan quyu kaiqiaodecoction + CPAP + health guidance	CPAP + Health guidance
Yin et al., 2017 [30]	Decoction	Jianpi Huatan decoction + CPAP + health guidance	CPAP + Health guidance
Xu et al., 2018 [31]	Granule	Erchen snoring granule + health guidance	Health guidance
Lu, 2018 [32]	Decoction	Modified erchen decoction + CPAP	CPAP
Jin et al., 2019 [33]	Granule	Xiaohan Liqi granules + health guidance	Health guidance
Yang et al., 2019 [34]	Decoction	Modified erchen decoction and taohong siwudecoction + CPAP + health guidance	CPAP + Health guidance
Liu et al., 2019 [35]	Decoction	Quyu Huatan decoction + CPAP + health guidance	CPAP + Health guidance

Note. T, treatment group; C, control group; N.R, not reported; CPAP, continuous positive airway pressure.