Table 4

Associations between ocular symptoms and Schirmer-1 test: subjects aged under and over 55 years

Abnormal Schirmer-1 test?
Subjects aged under 55 yearsSubjects aged over 55 years
YesNoPPVNPVLR
(95% CI)4-150
YesNoPPVNPVLR
(95% CI)4-150
+ve Ocular symptoms ?
Yes13320.290.841.766250.190.620.50
No25133(1.3, 2.3)2642(0.3, 0.7)
+ve Ocular and oral symptoms ?
Yes8190.300.831.815140.260.660.75
No30144(1.1, 3.0)2753(0.2, 3.2)
  • 4-150 LR (95% CI) = likelihood ratio (95% confidence intervals). Abbreviations as in Table 3.