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. 2000 Oct;84(10):1198–1202. doi: 10.1136/bjo.84.10.1198

Appraising evaluations of screening/diagnostic tests: the importance of the study populations

R HARPER 1, D HENSON 1, B REEVES 1
PMCID: PMC1723243  PMID: 11004111

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Figure 1  .

Figure 1  

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ROC curves for tonometry, drawn from the data of Daubs and Crick (open squares), Tielsch et al (solid circles), and Harper and Reeves (open circles). In each case the data points represent the sensitivity and specificity at different levels of IOP from 10 mm Hg to 28 mm Hg in 2 mm Hg steps.

Figure 2  .

Figure 2  

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Distributions of IOP (mm Hg) for the "non-glaucomatous" samples used by Daubs and Crick (top), Tielch et al (centre), and Harper and Reeves (bottom). (Since the raw data were unavailable for two of these studies, distributions have been derived from the specificity estimates at each level of IOP, either as reported directly in the paper, or as read from figures illustrating the variation in sensitivity/specificity at specific cut off criteria. Percentages at 10 mm Hg and 28 mm Hg include all cases with IOP below and above these criteria respectively.)

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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