In patients, odor detection sensitivity (pooled across odor intensity) showed significant positive correlations with odor identification (r = 0.57, p = 0.04) and odor thresholds (right, r = 0.38, p = 0.05; left, r = 0.30, p = 0.09), and P2 source was likewise significantly correlated with odor identification (r = 0.69, p = 0.0003) and right (r = 0.58, p = 0.004) but not left (r = 0.23, p = 0.16) odor thresholds, indicating that poorer odor identification and odor thresholds in patients were associated with reduced odor detection and P2 source. There were no other significant correlations between behavioral, electrophysiologic and nasal chemosensory measures in patients or controls.
