. Author manuscript; available in PMC: 2025 Jan 1.

Published in final edited form as: J Head Trauma Rehabil. 2023 Nov 6;39(1):31–42. doi: 10.1097/HTR.0000000000000909

Table 1:

Distribution of Pain Interference Scores and Classification into Extreme Phenotypes

Pain Interference Response (BPI)
N [Missing]	1727 [35]
Mean (SD)	4.3 (2.5)
[Minimum, 25^th percentile, median, 75^th percentile, maximum]	[0, 2.3, 4.3, 6.1, 10]

Pain Interference Phenotypes
Extreme High Interference Phenotype [BPI ≥ 6.2], N (%)	431 (25.0%)
Non-Extreme Neutral Phenotype [2.3 < BPI < 6.2], N (%)	855 (49.5%)
Extreme Low Interference Phenotype [BPI ≤ 2.3], N (%)	441 (25.5%)

BPI = Brief Pain Inventory; SD = standard deviation