Table 4

Comparison between the paediatrician’s assessment and combined set of standardised tests (n=395 performed each test)

Conclusion of the combined set of standardised tests
Conclusion of paediatrician’s assessmentAt risk or abnormalOptimalAll
At risk or abnormal110 20130
Optimal118147265
All228167395
95% CI
Sensitivity48%42–55%
Specificity88%83–93%
Positive predictive value85%78–91%
Negative predictive value55%49–61%
Prior probability (prevalence)0.58
Pretest odds1.4
Positive test
Positive likelihood ratio4.032.61–6.21
Post-test probability0.850.78–0.89
Post-test odds5.5
Negative test
Negative likelihood ratio0.590.51–0.67
Post-test probability0.450.41–0.48
Post-test odds0.8