Table 1. General characteristic of the participants at baseline and at the end of the Baihe Dihuang Tang intervention (4 weeks) and the healthy controls.

	Psychological suboptimal health		Healthy controls
	Before 4 weeks	After 4 weeks
Sample size	22	22	23
Sex (M/F)	4/18	4/18	5/18
Age (year)	48.7 ± 5.3	48.7 ± 5.3	49.3 ± 4.6
SCL-90	143.9 ± 22.6	112.4 ± 11.5**	90

M: male; F: Female; SCL-90: The Symptom Checklist 90.

**P < 0.01 before and after 4 weeks.