No	Author	Year	Population	Sex	Exposures	Comparator	Outcomes	Study Design	Mean Age (Years)
1	James [17]	1990	Nurses	B	Night shift	Other shifts	depression	cross-sectional	35
2	Ruggiero [18]	2003	Nurses	F	Night shift	Day shift	depression	cross-sectional	44.9
3	Bjorvantn [19]	2012	Nurses	B	Shift work	General population	depression	cross-sectional	39.4 (9.1)
4	Øyane [20]	2013	Nurses	B	Current night shift	No night shift	depression	cross-sectional	33.1 (8.2)
5	Thun [21]	2014	Nurses	F	Night shift	Day shift	depression	cross-sectional study	33.1 (8.2)
6	Gong [22]	2014	Nurses	B	Night shift (>=2/week)	Night shift (<2/week)	depression	cross-sectional	31.93 (7.55)
7	Berthelsen [23]	2015	Nurses	B	Night shift (current/previous)	No night shift	depression	cohort study	30–39
8	Togo [24]	2017	Nurses	B	Rotating shift	Day shift	depression	cross-sectional	Day worker = 41.5 (9.7), Rotating shift = 40.2 (10.4)
9	Hall [25]	2018	Nurses	B	High-precision work schedule (regular days)	High-precision work schedule (Rapid frequency rotating shifts)	depression	cross-sectional	45–54
10	Booker [26]	2018	Nurses	B	High-risk SWD	Low-risk SWD	depression	cross-sectional	35.28 (12.02)
11	Tahghighi [27]	2019	Nurses	B	Shift work	Non-shift work	depression	cross-sectional	Shift work = 46.8 (11.50), Non-shift work = 50.0 (9.99)
12	Khade [28]	2019	Nurses	B	Number of night shifts in last 1 month	None	depression	cross-sectional	25.3 (5.4)
13	Mbanga [29]	2019	Nurses	B	Number of night shifts in last 1 week	None	depression	cross-sectional	29.8 (6.55)
14	Bukhari [30]	2019	Nurses	F	Rotating shift	Not stated	depression	cross-sectional	Not stated
15	Dai [31]	2019	Nurses	B	Night shift	Day shift	depression	cross-sectional	Not stated
16	Bilge [32]	2020	Nurses	F	Night shift	Day shift	depression	cross-sectional	36.0 (6.37)
17	Choi [33]	2020	Nurses, Firefighters, Day workers	B	Nurses working 3-shift schedule	Other day workers	depression	cross-sectional	Nurses—28.7 (5.13), Firefighters—42.8 (9.38), Day workers—40.1 (8.30)
18	Park [34]	2020	Nurses	F	Shift work	Day shift	depression	cross-sectional	Shift work—28.1 (3.2), Day shift—30.8 (4.6)
19	Vitale [35]	2022	Nurses	B	Night shift	Day shift	depression	cross-sectional	Not stated
20	Yuxin li [36]	2022	Nurses	B	Shift work	No shift work	depression	cross-sectional	33.24 (7.31)
B: both male and female, F: female only.