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Table 5 Characteristics of patients according to the reflux profiles

From: Variability and accuracy of multiple saliva pepsin measurements in laryngopharyngeal reflux patients

 

Morning pepsin test

Post-lunch pepsin test

Post-dinner pepsin test

SE

SP

PPV

NPV

SE

SP

PPV

NPV

SE

SP

PPV

NPV

≥ 16 ng/mL

64.9

66.7

75.0

55.2

59.5

66.7

73.3

51.6

59.0

66.7

74.2

50.0

≥ 36 ng/mL

54.1

80.0

80.0

54.0

56.8

79.2

80.8

54.3

53.9

79.2

80.0

51.4

≥ 45 ng/mL

51.4

83.3

81.8

54.1

54.1

79.2

80.0

52.8

51.3

79.2

80.0

50.0

≥ 75 ng/mL

48.6

83.3

81.0

52.6

45.9

83.3

80.9

50.0

48.7

83.3

82.6

50.0

≥ 100 ng/mL

45.7

87.5

84.2

52.5

45.9

83.3

80.9

50.0

48.7

83.3

82.6

50.0

  1. SE, sensitivity; SP, specificity; PPV, positive predictive value; NPV, negative predictive value