Cross-Cultural Adaptation of the Norwegian Versions of the Roland-Morris Disability Questionnaire and the Oswestry Disability Index

Abstract

The reliability and construct validity of the Norwegian versions of the Roland Morris Disability Questionnaire and the modified Oswestry Disability Index are acceptable for assessing functional status of Norwegian-speaking patients with low back pain.

Development of a German version of the Oswestry Disability Index. Part 1: cross-cultural adaptation, reliability, and validity

“…Although five individuals did ultimately return their second questionnaire, which they had completed from 17 to 25 days after the first, in the interests of homogeneity we chose not to include these data in the final analysis (though the data from these five patients was actually remarkably reliable: ICC for ODI 0.93; RM 0.91). The ICC reported in the present study for the German ODI was higher than those reported in previous studies, even though many of the latter used shorter test-retest intervals (median 4 days, ICC=0.91 [29]; 1 week, 0.83 [22], 0.94 [15]; 2 days, 0.88 [23], 2 weeks, 0.94 [26]; 4 weeks, 0.90 [21], 6 weeks, 0.84 [11]). The weighted j values for the individual questions were moderate to very good, ranging from 0.59 (for the ''lifting'' question) to 0.85 (for ''walking''); no j values for the ODI have previously been reported in the literature for comparison [32].…”

“…the degree of change required in a given individual's measures, in order to establish it (with a given level of confidence) as being a ''real change'', over and above measurement error. At the 95% confidence level, the MDC 95% for the ODI was 9 points-slightly lower than the values previously reported in the literature (13 points [21], 11 points [23], 10 points [25], 17 points [11]). An MDC 95% of 9 points indicates that, if an individual were to record a change of more than 9 points after a given intervention, then the odds would be 19 to 1 (i.e.…”

“…For the whole scale the Cronbach's alpha was 0.90, which is higher than the majority of coefficients previously reported (0.76 [28]; 0.77 [20]; 0.83 [10]; 0.94 [23]). Cronbach's alphas greater than 0.8 are generally recommended for psychometric scales [36], although for individual patient assessments in the clinical situation, an alpha coefficient of at least 0.9 is recommended [7].…”

“…The German ODI correlated somewhat better with VAS pain (r=0.78) than it has been shown to in previous studies {e.g. 0.62 (chronic LBP) [22]; 0.37-0.39 [15]; 0.39 (acute LBP), 0.52 (chronic LBP) [23]}, although in the latter study, VAS pain itself was not particularly reliable, especially for the acute patients [23]. The correlation between LBP-related disability and pain ratings is expected to be good, but it should not be extremely high, otherwise it would suggest that the two instruments are carrying identical information.…”

Leg pain and psychological variables predict outcome 2–3 years after lumbar fusion surgery

“…The self-perceived effectiveness of coping strategies to control pain (CSQ-COP) and ability to decrease pain (CSQ-ADP) were measured by two singleitem scales with a score range of 0-6 (low-high). In Scandinavian conditions, all questionnaires have been shown to have good reliability and validity [10,16,18,21,22,24,26,36].…”