Efficacy of bright light therapy for perinatal depression: A meta-analysis of a randomized controlled trial

Table 2 Essential features of the included research

Ref.	Test group	Control group	Duration	Main evaluation scales
Bais et al[18]	9000 Lux	100 Lux	30 minutes/day, 6 weeks	EPDS; HAMD
Corral et al[20]	10000 Lux	600 Lux	30 minutes/day, 6 weeks	EPDS; SIGH-SAD
Donmez et al[19]	10000 Lux	< 500 Lux	45 minutes/day, 3 weeks	EPDS; HAMD; SIGH-SAD
Epperson et al[21]	7000 Lux	500 Lux	60 minutes/day, 5 weeks	EPDS; HAMD; SIGH-SAD
Garbazza et al[22]	10000 Lux	19 Lux	30 minutes/day, 6 weeks	EPDS
Wirz-Justice et al[23]	7000 Lux	70 Lux	60 minutes/day, 5 weeks	SIGH-SAD; HAMD

EPDS: Edinburgh postnatal depression scale; HAMD: Hamilton depression scale; SIGH-SAD: Structured interview guide for the Hamilton depression rating scale.