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Table 6 Factor models of SF BPI in original study and other studies

From: Evaluating psychometric properties of the Short Form Brief Pain Inventory Sinhala Version (SF BPI-Sin) among Sinhala speaking patients with cancer pain in Sri Lanka

Factors

Two factors

Three factors without item ‘sleep’

Three factor-1

Three factor-2

Original study [11]

Aisyaturridha et al. [41]

Ger et al. [21]

Saxena et al. [46]

Zeng et al. [43]

Wu et al. [42]

Klepstad et al. [17]

Atkinson et al. [45]

Cleeland et al. [24]

Severity

WLAN

WLAN

WLAN

WLAN

WLAN

WLAN

WLAN

WLAN

WLAN

Activity

WAW, sleep, REM

WAW, sleep, REM

WAW, sleep, REM

WAW

WAW

WAW

WAW

WAW

WAW, sleep

Affective

REM

REM

REM

REM, sleep

REM, sleep

REM

  1. WLAN—the pain severity items (W—worst, L—least, A—average, N—now)
  2. REM—the affective cluster of interference items (R—relations with others, E—enjoyment of life and M—mood),
  3. WAW—the activity cluster of interference items (W—walking, A—general activity and W—work)