Validation of a Decision Rule and Derivation of a Modified Rule to Obtain Chest Radiograph in Patients with Nontraumatic Chest Pain in the Emergency Department

Table 2

Clinically insignificant abnormal findings on chest radiography.

Radiographic abnormality	Number of patients with finding (% of total)
Atelectasis	19 (2.0%)
Cardiomegaly	13 (1.3%)
Nodule	4 (0.4%)
Chronic obstructive pulmonary disease	2 (0.2%)
Hiatal hernia	2 (0.2%)
Known mass	2 (0.2%)
Other	9 (0.9%)