Impact of clinical history on chest radiograph interpretation

Authors


  • Disclosures: Samir S. Shah MD, and Michael Monuteaux, ScD, had full access to the data. Related publication: Neuman MI, Lee EY, Bixby S, et al. Variability in the interpretation of chest radiographs for the diagnosis of pneumonia in children. J Hosp Med. 2012;7:294–298. The authors have no funding, financial relationships, or conflicts of interest to disclose.

Address for correspondence and reprint requests: Samir S. Shah, MD, 3333 Burnet Avenue, ML 9016, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229. E-mail: samir.shah@cchmc.org

Abstract

BACKGROUND

The inclusion of clinical information may have unrecognized influence in the interpretation of diagnostic testing.

OBJECTIVE

The objective of the study was to determine the impact of clinical history on chest radiograph interpretation in the diagnosis of pneumonia.

DESIGN

Prospective case-based study.

METHODS

Radiologists interpreted 110 radiographs of children evaluated for suspicion of pneumonia. Clinical information was withheld during the first interpretation. After 6 months the radiographs were reviewed with clinical information. Radiologists reported on pneumonia indicators described by the World Health Organization (ie, any infiltrate, alveolar infiltrate, interstitial infiltrate, air bronchograms, hilar adenopathy, pleural effusion).

SETTING

Children's Hospital of Philadelphia and Boston Children's Hospital.

PARTICIPANTS

Six board-certified radiologists.

OUTCOME MEASURES

Inter- and inter-rater reliability were assessed using the kappa statistic.

RESULTS

The addition of clinical history did not have a substantial impact on the inter-rater reliability in the identification of any infiltrate, alveolar infiltrate, interstitial infiltrate, pleural effusion, or hilar adenopathy. Inter-rater reliability in the identification of air bronchograms improved from fair (k = 0.32) to moderate (k = 0.53). Intra-rater reliability for the identification of alveolar infiltrate remained substantial to almost perfect for all 6 raters with and without clinical information. One rater had a decrease in inter-rater reliability from almost perfect (k = 1.0) to fair (k = 0.21) in the identification of interstitial infiltrate with the addition of clinical history.

CONCLUSIONS

Alveolar infiltrate and pleural effusion are findings with high intra- and inter-rater reliability in the diagnosis of bacterial pneumonia. The addition of clinical information did not have a substantial impact on the reliability of these findings. Journal of Hospital Medicine 2013;8:359–364. © 2012 Society of Hospital Medicine

Ancillary