Reliability, Stability and Validity of the Brazilian Adaptation of the Oliveira Questionnaire on Low Back Pain in Young People

Abstract

The objective of this study was to adapt the Brazilian version, and verify the validity, reliability and internal consistency of the Oliveira questionnaire on low back pain in young people. Material and Methods:The questionnaire was translated from European Portuguese into Brazilian Portuguese by means of translation and re-translation. The validity of the contents was determined by experts who analyzed the clarity and pertinence of the questions. Fifteen young people aged 15 to 18 took part in the pre-test step (qualitative analysis), 40 in the test-retest (reliability) and 679 in the evaluation of internal consistency. The intra-class correlation coefficient and Spearman's correlation coefficient were used in the reliability analysis (test-retest), and Cronbach's alpha to determine the internal consistency (stability). Results:In the translation phase the questionnaire was modified and considered suitable, observing similarity and equivalence of the two versions. After being corrected by the experts in the validation of the contents, the instrument was considered suitable and valid, and in the pre-test, the young people suggested some modifications to make the questionnaire more succinct. With respect to reliability, the values for the intra-class correlation coefficient were between 0.512 -acceptable and 1 -excellent and Spearman's correlation coefficient varied between 0.525 and 1, classifying the instrument as reproducible. The internal consistency was considered acceptable with a 0.757 Cronbach's alpha. Discussion: The Oliveira questionnaire was choosen since it has been used in several Portuguese studies; moreover, it addresses the need to raise data regarding low back pain and associated risk factors. Conclusions:The Brazilian version of the Oliveira questionnaire on low back pain in young people showed valid and reliable cultural adaptation, with good reliability and stability.

Young people’s low back pain and awareness of postural habits: A cross-sectional study

“…The participants filled in the Oliveira Questionnaire on Low Back Pain in Young People (OLBPYQ), which was developed and validated, and showed a reliability of (ICC = 0.89-0.97), and verified and applied in Portugal [24]. The Brazilian version of the questionnaire was considered suitable and similar to the original version, valid, reliable and reproducible (ICC from 0.512 to 1.0), with a Spearman correlation coefficient of from 0.525 to 1.0; and internal consistency -Cronbach Alpha of 0.757) [25].…”

“…The OLBPYQ uses language which is accessible to the age group (10-18 years old) to which it was applied, is clear and objective, is mainly formed of closed answers and is fast to complete (10 to 15 minutes). LBP refers to all complaints of pain in the lower part of the back (acute or chronic) which might spread to the buttocks and legs, with a minimum duration of 24 hours [25]. Questions related to: age, gender and psychosocial variables related to the level of physical activity and tobacco use were answered.…”

Simplified Chinese Version of the Back Pain Function Scale (BPFS) for Patients with Low Back Pain

“…To the best of the authors’ knowledge, the study is the first report on the adaptation of the BPFS into the Chinese language. Only some professional functional questionnaires, such as ODI 20 and Oliveira Questionnaire, 21 for measurement of quality-of-life state of patients are available in a validated Chinese version. However, these questionnaires were not specifically developed for the subjective awareness of the impact of patients’ LBP on daily activities and may be affected by joint surgery, other limb joints with poor function and other pains.…”