Result of initial chest X-ray and diagnosis within or after 6 weeks (42 days)a
| Diagnosed within 6 weeks of initial CXR, n (%) | Diagnosed after 6 weeks of initial CXR, n (%) | |
|---|---|---|
| CXR positive | 858 (97.1) | 895 (71.9) |
| CXR negative | 26 (2.9) | 350 (28.1) |
| Total | 884 | 1245 |
↵a Pearson’s χ2 test demonstrated a statistically significant association between positive CXR and diagnosis within 42 days, χ2 (1, N = 2129) 225.24, P<0.001. CXR = chest X-ray.