Table 6.

Top 10 key words in terms of frequency and centrality.

Rank	Keyword	Count	Keyword	Centrality
1	Insomnia	46	Anxiety	0.2
2	Aromatherapy	33	Fatigue	0.19
3	Sleep quality	32	Acupressure	0.16
4	Fatigue	27	Sleep	0.16
5	Anxiety	26	Insomnia	0.14
6	Depression	22	Care	0.14
7	Acupressure	21	Depression	0.12
8	Sleep	20	Disorder	0.1
9	Therapy	17	Massage	0.09
10	Massage	15	Therapy	0.08