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. 2021 Jun 28;22(11):2638–2647. doi: 10.1093/pm/pnab204

Table 2.

Linear mixed effects models estimating pain outcomes on the Brief Pain Inventory

Average Pain
Pain Interference
β (95% CI) P β (95% CI) P
Intercept 1.90 (1.57, 2.36) <0.001 1.15 (0.74, 1.55) <0.001
PTSD Trajectories
 Resilient Reference
 Recovery 0.65 (0.09, 1.08) <0.001 0.83 (0.43, 1.24) <0.001
 Worsening 1.42 (0.77, 1.78) <0.001 1.85 (1.43, 2.27) <0.001
 Chronic 2.61 (1.71, 3.14) <0.001 3.35 (2.80, 3.89) <0.001
Early Regional Anesthesia
 No Reference
 Yes −0.31 (-0.90, -0.04) 0.048 −0.26 (-0.59, 0.05) 0.102
Time Since Injury (Months) −0.03 (-0.04. –0.01) 0.001 −0.04 (-0.05, -0.02) <0.001
Length of Hospitalization (Days) 0.01 (0.01, 0.01) <0.001 0.01 (0.01, 0.01) <0.001
Injury Severity Score 0.01 (-0.01, 0.01) 0.374 0.01 (-0.01, -0.01) 0.644
Entry Cohort
≤6 Months Reference
>6 Months 0.05 (-0.35, 0.44) 0.118 −0.04 (-0.44, 0.36) 0.847

β = coefficient; 95% CI = 95% confidence interval of coefficient.