Studies giving a PPV of ≥5% in one or more strata of dysphagia for oesophageal cancer.
| Stratification with PPV ≥5% | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Study and NOQAS star rating | Type | Data source | Follow-up | Age, years | Sex | Symptom | Sex | Age, years | Number with symptom | PPV, % (95% CI) | |
| Jones et al, 200712 (9 stars) | Retrospective cohort | Routinely recorded computer codes | 3 years | ≥15 | M+F | Dysphagia computer codes | M | 55–64 | 518 | 6.0 (4.1 to 8.4) | |
| 65–74 | 576 | 9.0 (6.8 to 11.7) | |||||||||
| 75–84 | 476 | 7.1 (5.0 to 9.8) | |||||||||
| ≥85 | 154 | 9.7 (5.6 to 15.6) | |||||||||
| Esfandyari et al, 200233 (4 stars) | Prospective cohort | Specifically registered | Not given | Not given | M+F | Dysphagia | M+F | Not given | 100 | 6.0 (2.8 to 12.5) | |
F = female. M = male. NOQAS = Newcastle-Ottawa Quality Assessment Scales. PPV = positive predictive value.