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Table 2 Characteristics of prevalence studies of exercise populations

From: The prevalence of orthorexia in exercising populations: a systematic review and meta-analysis

Study ID

Country

Selection

Sample type

Age range

Age Mean ± SD

ON instrument

Cut-off

N

% Female

Sport type

ON prev%

RR %

Almeida et al. [34]

Portugal

Non-random

Exercisers

18–59

32.8 ± 11.6

ORTO-15

35

193

58.5

Individual

51.8

100

Bert et al. [76]

Italy

Non-random

Athletes

18–40

26.5 ± 5.4

ORTO-15

40

367

25.5

Mixed/unknown

71.9

100

Bo et al. [75]

Italy

Non-random

Students

Not provided

19.9 ± 1.8

ORTO-15

35

200

32.5

Mixed/unknown

26.5

87.0

Civil [79]

Turkey

Non-random

Athletes

18–37

22.9 ± 4.3

ORTO-11

27

143

31.5

Individual

75.5

100

Clifford and Blyth [4]

UK

Non-random

Students & athletes

18–27

21 ± 1.0

ORTO-15

40

116

58.0

Team sport

76.6

100

Dabal [80]

Poland

Non-random

Students

18–35

23.9 ± 4.7

ORTO-15

35

83

49.6

Mixed/unknown

37.3

100

Dunn et al. [17]

USA

Non-random

Students

Not sited

21.7 ± 4.8

ORTO-15

40

264

68.0

Individual

74.2

93.5

Erkin and Göl [78]

Turkey

Non-random

Athletes

18–56

30.5 ± 9.2

ORTO-11

27

118

92.4

Individual

75.0

77.1

Freire et al. [77]

Brazil

Non-random

Exercisers

18–34

26.6 ± 7.8

ORTO-15

40

60

63.3

Individual

80.0

100

Kattan [84]

Lebanon

Random

Students

18–30

21.7 ± 1.9

ORTO-15

40

152

84.0

Mixed/unknown

68.4

100

Keller and Konradsen [71]

Denmark

Non-random

Exercisers

16–29

22 ± 3.4

OS

7

119

53.8

Individual

8.4

100

Kiss-Leizer et al. [83]

Hungary

Non-random

General population

18–72

29.7 ± 10.2

ORTO-11

14–19

635

79.2

Individual

36.9

100

Labossiere and Thibault [86]

Canada

Non-random

Students & athletes

Not provided

21.3 ± 1.7

ORTO-15

35

133

71.4

Mixed/unknown

11.3

31.6

Lewis [70]

USA

Non-random

Students & athletes

18–23

20.5 ± 1.2

ORTO-15

40

427

44.0

Team sport

66.3

71.0

Malmborg et al. [82]

Sweden

Non-random

Students

19–29

22.8 ± 2.2

ORTO-15

40

118

54.2

Mixed/unknown

78.8

66.1

De Marchi and Baratto [68]

Portugal

Non-random

Students

18–39

21 ± not provided

ORTO-15

40

41

93.9

Mixed/unknown

73.2

96.5

Rizzieri et al. [74]

Portugal

Non-random

Exercisers

20–59

29.9 ± 7

ORTO-15

40

65

55.4

Individual

89.2

100

Rudolph and Göring [36]

Germany

Non-random

Athletes

Not provided

29.4 ± 11.6

DOS

30

1008

44.5

Individual

4.3

100

Segura-Garcia et al. [33]

Italy

Non-random

Athletes

16–45

22.3 ± 4.7

ORTO-15

35

577

32.8

Mixed/unknown

28.8

86.8

da Silva et al. [72]

Brazil

Non-random

Exercisers

18–60

27.8 ± 5.1

TOS

50–75

226

36.3

Individual

5.3

100

Surala et al. [16]

Poland

Non-random

Athletes

14–39

20.9 ± 4.7

ORTO-15

40

273

45.8

Mixed/unknown

88.3

100

Tocchetto et al. [73]

Portugal

Non-random

Students & athletes

Not sited

23.5 ± 1.4

ORTO-15

40

50

46.0

Mixed/unknown

78

100

Uriegas et al. [69]

USA

Non-random

Students & athletes

18–40

19.6 ± 1.4

ORTO-15

40

1090

69.4

Mixed/unknown

67.9

98.6

Herranz Valera et al. [85]

Switzerland

Non-random

Athletes

20–55

37 ± 6.7

ORTO-15

40

136

65.5

Individual

86.6

23.4

  1. ON othorexia nervosa, Prev prevalence, RR response rate, OS orthorexia screen, DOS Düsseldorfer Orthorexie Scale, TOS Teruel Orthorexia Scale
  2. Cut-off, a mark for the lowest point at which ON is attained. Sample type, divided in which groups total samples is recruited from (75% or more)