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Table 2 Example search strategy

From: The relationship between perinatal circadian rhythm and postnatal depression: an overview, hypothesis, and recommendations for practice

Strategy

Database

Search term

Results

2

PsycINFO

exp “HUMAN BIOLOGICAL RHYTHMS”/

7436

3

PsycINFO

CHRONOTYPE/

620

4

PsycINFO

(circadian rhythm*).ti,ab

8945

5

PsycINFO

(body clock*).ti,ab

743

6

PsycINFO

(biological rhythm*).ti,ab

1930

7

PsycINFO

(sleep*wake).ti,ab

1015

8

PsycINFO

(circadian disturbance*).ti,ab

1210

9

PsycINFO

(2 OR 3 OR 4 OR 5 OR 6 OR 7 OR 8)

15,351

10

PsycINFO

MOTHERS/

44,891

11

PsycINFO

“POSTNATAL PERIOD”/

5103

12

PsycINFO

(mother* OR maternal).ti,ab

152,143

13

PsycINFO

(post*natal).ti,ab

20,604

14

PsycINFO

(post*partum).ti,ab

12,441

15

PsycINFO

(10 OR 11 OR 12 OR 13 OR 14)

174,809

16

PsycINFO

(9 AND 15)

432

17

Medline

(circadian rhythm*).ti,ab

33,293

18

Medline

(body clock*).ti,ab

2767

19

Medline

(biological rhythm*).ti,ab

5771

20

Medline

(sleep*wake).ti,ab

1826

21

Medline

(circadian disturbance*).ti,ab

2649

22

Medline

(17 OR 18 OR 19 OR 20 OR 21)

39,152

23

Medline

(mother* OR maternal).ti,ab

411,179

24

Medline

(post*natal).ti,ab

109,614

25

Medline

(post*partum).ti,ab

57,197

26

Medline

(23 OR 24 OR 25)

533,741

27

Medline

(22 AND 26)

904

28

CINAHL

exp “BIOLOGICAL CLOCKS”/

586

29

CINAHL

exp “CIRCADIAN RHYTHM”/

7020

30

CINAHL

“SLEEP DISORDERS, CIRCADIAN RHYTHM”/

702

31

CINAHL

“CHRONOBIOLOGY DISORDERS”/

295

32

CINAHL

(circadian rhythm*).ti,ab

2770

33

CINAHL

(body clock*).ti,ab

373

34

CINAHL

(biological rhythm*).ti,ab

467

35

CINAHL

(sleep*wake).ti,ab

11

36

CINAHL

(circadian disturbance*).ti,ab

489

37

CINAHL

(28 OR 29 OR 30 OR 31 OR 32 OR 33 OR 34 OR 35 OR 36)

9464

38

CINAHL

MOTHERS/

31,370

39

CINAHL

“MOTHER-INFANT RELATIONS”/

3137

40

CINAHL

exp “POSTNATAL PERIOD”/

14,049

41

CINAHL

PUERPERIUM/

555

42

CINAHL

(mother* OR maternal).ti,ab

140,927

43

CINAHL

(post*natal).ti,ab

17,029

44

CINAHL

(post*partum).ti,ab

23,084

45

CINAHL

(38 OR 39 OR 40 OR 41 OR 42 OR 43 OR 44)

175,003

46

CINAHL

(37 AND 45)

195

47

EMBASE

“CIRCADIAN RHYTHM”/

89,247

48

EMBASE

PHOTOPERIODICITY/

10,836

49

EMBASE

“BIOLOGICAL RHYTHM”/

6983

50

EMBASE

(circadian rhythm*).ti,ab

33,999