The Effectiveness of Aromatherapy for Depressive Symptoms: A Systematic Review

Table 5

Quality assessment of studies included according to the Jadad scale.

Reference	⁢Quality assessment of methodology based on Jadad scale
	Randomization	Appropriate method of randomization and description	⁢Blinding				Description of dropouts/withdrawals	Jadad score (score out of 5)
			No blinding	Single blind	Double blind	Appropriate method of double blinding and description
Inhalation aromatherapy
[18]	Yes	Yes	No	No	Yes	Yes	No	4
[19]	Yes	No	Yes	No	No	NA	Yes	2
[20]	Yes	Yes	Yes	No	No	NA	Yes	3
[21]	Yes	No	No	Yes	No	No	No	1
[22]	Yes	Yes	No	No	Yes	No	Yes	4
Aromatherapy massage
[23]	Yes	No	Yes	No	No	NA	No	1
[24]	Yes	Yes	No	No	Yes	Yes	Yes	5
[25]	Yes	Yes	No	No	Yes	No	Yes	3
[26]	Yes	Yes	Yes	No	No	NA	NA	2
[19]	Yes	No	Yes	No	No	NA	Yes	2
[27]	Yes	Yes	No	Yes	No	No	Yes	3
[28]	Yes	Yes	Yes	No	No	No	No	2
[29]	Yes	No	Yes	No	No	NA	No	1

In this study, both aromatherapy modalities were tested, inhalation aromatherapy and aromatherapy massage. Therefore, the study was included in both categories in the table. NA, not applicable.