The Effect of Lavender Aromatherapy on Autonomic Nervous System in Midlife Women with Insomnia

Table 1

Demographics and characteristics of study subject between experimental and control groups (𝑁=67).

Variable	Control group (𝑛=33)	Experimental group (𝑛=34)	𝑃 value
Age (years)^1	51.09±3.73	50.85±3.73	0.796
Education, 𝑛 (%)^2			0.777
Below junior	6 (19.4)	5 (15.2)
High school	18 (58.1)	22 (66.7)
Above university	7 (22.6)	6 (18.2)
Employment, 𝑛 (%)^2			0.941
No	9 (27.3)	9 (26.5)
Yes	24 (72.7)	25 (73.5)
Marital status, 𝑛 (%)^2			1.000
Unmarried	2 (6.1)	3 (9.1)
Married	27 (81.8)	26 (78.8)
Divorce	3 (9.1)	2 (6.1)
Widow	1 (3.0)	2 (6.1)
Menopause, 𝑛 (%)^2			0.901
No	16 (48.5)	17 (50.0)
Yes	17 (51.5)	17 (50.0)
Regular exercise, 𝑛 (%)^2			0.675
No	11 (34.4)	13 (39.4)
Yes	21 (65.6)	20 (60.6)
Afternoon nap, 𝑛 (%)^2			0.938
No	21 (65.6)	22 (64.7)
Yes	11 (34.4)	12 (35.3)
Drinks coffee/tea, 𝑛 (%)^2			0.805
No	15 (45.5)	16 (48.5)
Yes	18 (54.5)	17 (51.5)
Drinks wine, 𝑛 (%)^2			0.183
No	28 (75.8)	30 (88.2)
Yes	5 (24.2)	4 (11.8)
Smoking, 𝑛 (%)^2			0.672
No	31 (93.9)	29 (87.9)
Yes	2 (6.1)	4 (12.1)
CPSQI-total^3	9 (8, 12)	11 (9, 13)	0.100

Values are expressed as ¹mean ± standard deviation; ²number (percentage), and ³median (interquartile range). 𝑃 Values are based on ¹independent two-sample 𝑡-test, ²Chi-square test and ³Mann-Whitney 𝑈-test.