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Table 5 Calculated sensitivity and specificity of detecting unreliable CRP values using an absolute criterion. Results are given for men, no-oral contraceptives (OC) using women, and oral contraceptives using women, separately.

From: Diagnostic strategies for C-reactive protein

Ā 

Men

No OC-using women

OC-using women

Ā 

Sensitivity

Specificity

Sensitivity

Specificity

Sensitivity

Specificity

2.75 mg/l

0.65

0.93

0.60

0.99

0.67

0.78

2.50 mg/l

0.71

0.93

0.60

0.98

0.83

0.74

2.25 mg/l

0.88

0.90

0.70

0.97

0.67

0.78

2.00 mg/l

0.94

0.88

0.70

0.96

1.00

0.62

1.75 mg/l

1.00

0.85

0.80

0.93

1.00

0.52

1.50 mg/l

1.00

0.80

0.90

0.89

1.00

0.45

1.00 mg/l

1.00

0.69

1.00

0.76

1.00

0.29