Table 3 Diagnostic performance of the LEAF-Q subcategories (injury, gastrointestinal symptoms, and menstrual function) to identify individuals with the associated indicators of the Triad, based on the original publication

Injury ≥ 2

 BMD (Z score < -1)

  Lumbar spine

0.78 [0.61, 0.96]

100

32

2

100

  Lumbar spine^a

100

66

5

100

  Hip

–

–

–

–

  History of Stress fracture

0.43 [0.25, 0.62]

54

28

18

68

 BMD (Z score < 0)

  Lumbar spine

0.77 [0.59, 0.95]

80

33

10

95

  Lumbar spine^a

80

69

19

97

  Hip

0.47 [0.01, 0.92]

50

31

2

95

  Hip^a

50

66

5

97

Gastrointestinal symptoms ≥ 2

 RMR < 30 kcal/kg/FFM^b

0.45 [0.31, 0.60]

56

46

42

59

Menstrual function ≥ 4

 Amenorrhea (27)^b

0.93 [0.83, 1.03]

88

90

78

94