Clinical Study
The Relationship between Maternal Atopy and Childhood Asthma in Pretoria, South Africa
Table 1
Descriptive statistics for the relationship between maternal allergy or asthma and children with atopic asthma.
| | Prevalence of maternal | Doctor diagnosed asthma | Skin prick test positive | Allergic symptoms | Allergic symptoms or SPT positive |
| | Sensitivity | 21.9% | 46.9% | 70.3% | 78.1% | | Specificity | 94.4% | 50% | 30.7% | 25% | | ROC area | 0.582 | 0.484 | 0.504 | 0.516 | | Positive predictive value (PPV) | 87.5% | 62.5% | 64.3% | 64.9% | | Negative predictive value (NPV) | 40.5% | 34.6% | 36.7% | 39.1% |
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