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Percent Sensitivity and Specificity of Various Criteria for Typical Reiter's Syndrome

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Method of Classification

Sensitivity

Specificity

1. Episode of arthritis of more than 1 month with urethritis and/or
    cervicitis

(84.3%)
(70/83)

(98.2%)
(163/166)

2. Episode of arthritis of more than 1 month and either urethritis or
    cervicitis, or bilateral conjunctivitis

(85.5%)
(71/83)

(96.4%)
(160/166)

3. Episode of arthritis, conjunctivitis, and urethritis

(50.6%)
(42/83)

(98.8%)
(164/166)

4. Episode of arthritis of more than 1 month, conjunctivitis, and urethritis

(48.2%)
(40/83)

(98.8%)
(164/166)

* Initial episode.
+ Numbers in parenthesis indicate number of patients correctly classified/number tested.

Willkens RF, Arnett FC, Bitter T, Calin A, Fisher L, Ford DK, et al. Reiter's syndrome: evaluation of preliminary criteria for definite disease. Arthritis Rheum 1981;24:844---9.