Research Article

An Assessment of Clinically Important Differences on the Worst Pain Severity Item of the Modified Brief Pain Inventory in Patients with Diabetic Peripheral Neuropathic Pain

Table 2

Polyserial correlations and regression slopes of the m-BPI pain severity scale items with ADPS.

m-BPI pain severity scaleCorrelation coefficientSlope of items as a predictor for ADPS value

Pain right now3850.8340.800<0.001
Pain at its least in the last 24 hours3850.8110.845<0.001
Pain at its worst in the last 24 hours3850.8740.820<0.001
Pain on the average3840.8420.890<0.001

Patients with missing data on the BPI pain scales or ADPS at the endpoint were excluded from the correlation analysis. ADPS, average daily pain score; BPI, Brief Pain Inventory; m-BPI, modified Brief Pain Inventory.