The utility and validity of the modified brief pain inventory in a multiple-dose postoperative analgesic trial.

摘要: Objectives Patients undergoing major surgery often require several days of postoperative analgesia. However, few data exist on the longitudinal course pain and psychometric properties assessment tools used in this setting. Our objective was to validate use modified Brief Pain Inventory through reanalysis from a multiple-dose, placebo-controlled, randomized trial analgesia after coronary artery bypass graft surgery. Methods Four hundred sixty-two patients who underwent via median sternotomy were administered shortened form original that contained 3 severity 5 interference items. Additionally, presented with single-item measure procedure-specific pain. Daily ratings available 4 14 postoperatively. We performed factor analysis evaluate consistency which items loaded 2 separate factors corresponding Inventory's subscales. calculated reliability measures, internal test-retest reliability, for each subscale. Results The consistently measured underlying constructs, interference, Cronbach alphas 0.85 or greater scales, stability coefficients ranging 0.58 0.95 pair consecutive periods. question showed substantial overlap general severity, suggesting concurrent validity. Discussion stable valid over period, it can be during subacute period assess among