Mental state: 21. Primary mood rating scale baseline scores
Study	Bright light	Control treatment	Comments
Baseline scores
Benedetti 2003	N = 18 Mean: 23.72 SD: 6.90	N = 12 Mean: 22.58 SD: 4.89	Rating scale: HDRS
Benedetti 2003
Bloching 2000	N = 20 Mean: 27.3 SD: 5.5	N = 20 Mean: 29.4 SD: 6.2	Rating scale: HDRS
Bloching 2000
Colombo 2000	N = 40 Mean: 22.43 SD: 12.68	N = 33 Mean: 26.27 SD: 13.35	Rating scale: VAS (mean of three daily ratings)
Colombo 2000
Fritzsche 2001a	N = 11 Mean: 24.0 SD: 7.0	N = 9 Mean: 19.8 SD: 5.2	Rating scale: HDRS
Fritzsche 2001a
Fritzsche 2001b	N = 10 Mean: 21.5 SD: 5.4	N = 10 Mean: 21.5 SD: 6.2	Rating scale: HDRS
Fritzsche 2001b
Giedke 1989	N = 29 Mean: 16.67 SD: 4.12	N = 28 Mean: 16.32 SD: 2.93	Rating scale: HDRS
Giedke 1989
Holsboer 1994	N = 14 Mean: 22.69 SD: 5.25	N = 14 Mean: 26.02 SD: 6.37	Rating scale: HDRS (17‐item)
Holsboer 1994
Kripke 1983	N = 4 Mean: 16.50 SD: 9.04	N = 3 Mean: 15.67 SD: 8.14	Rating scale: HDRS
Kripke 1983
Kripke 1987	N = 7 Mean: 21.06 SD: 7.47	N = 7 Mean: 17.18 SD: 4.31	Rating scale: HDRS
Kripke 1987
Kripke 1992	N = 25 Mean: 18.3 SD: 5.2	N = 26 Mean: 15.2 SD: 4.3	Rating scale: HDRS (17‐item)
Kripke 1992
Loving 2002	N = 7 Mean: 24.0 SD: 9.85	N = 6 Mean: 18.8 SD: 7.17	Rating scale: HDRS (17‐item; self‐rated, part of SIGH‐SAD‐SR)
Loving 2002
Mackert 1990	N = 22 Mean: 19.5 SD: 4.1	N = 20 Mean: 19.1 SD: 4.2	Rating scale: HDRS
Mackert 1990
Moffit 1993	N = 10 Mean: 17.8 SD: 5.1	N = 10 Mean: 16.3 SD: 4.4	Rating scale: GDS
Moffit 1993
Neumeister 1996a	N = 7 Mean: 11.1 SD: 3.1	N = 7 Mean: 17.7 SD: 3.9	Rating scale: HDRS (modified 17‐item version)
Neumeister 1996a
Neumeister 1996b	N = 4 Mean: 18.0 SD: 7.1	N = 2 Mean: 18.8 SD: 2.9	Rating scale: HDRS (modified 17‐item version)
Neumeister 1996b
Prasko 2002	N = 11 Mean: 23.0 SD: 6.4	N = 9 Mean: 24.7 SD: 3.8	Rating scale: HDRS
Prasko 2002
van den Burg 1990	N = 11 Mean: 33.2 SD: 10.5	N = 12 Mean: 28.4 SD: 9.5	Rating scale: BDI
van den Burg 1990
Yamada 1995	N = 18 Mean: 17.6 SD: 4.7	N = 9 Mean: 21.7 SD: 5.8	Rating scale: HDRS
Yamada 1995