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Translation, Cultural Adaptation and Validation of the Italian Version of Functional Rating Index in Patients With Chronic Low Back Pain

Translation, Cultural Adaptation and Validation of the Italian Version of Functional Rating Index in Patients With Chronic Low Back Pain

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06793254
Enrollment
104
Registered
2025-01-27
Start date
2022-06-01
Completion date
2025-01-19
Last updated
2025-01-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Low Back Pain

Brief summary

Chronic Low Back Pain (cLBP) is a global health issue lasting more than 3 months, where a clear pathologic and anatomic cause of pain is not recognized. Various personal and psychosocial factors can influence the onset and chronicity of low back pain. The Functional Rating Index (FRI) is a self-administered questionnaire composed by 10 items, scored from 0 (better condition) to 4 (worst condition), that evaluate pain, sleep, work and daily activity. The FRI's final score ranges from 0% to 100% (no disability to severe disability). The aim of the study is to translate, culturally adapt and validate the FRI in Italian (I-FRI).

Detailed description

Chronic Low Back Pain (cLBP) is a global health issue lasting more than 3 months, where a clear pathologic and anatomic cause of pain is not recognized. Various personal and psychosocial factors can influence the onset and chronicity of low back pain. An outcome measure, in a specific context, refers to a quantifiable or observable variable used to assess and evaluate the results or effects of a particular intervention, treatment, program, or research study. The choice of appropriate outcome measures is critical in research and evaluation because it directly influences the validity and reliability of the results. There are already other validated scales translated in Italian for the evaluation of patients with cLBP, such as the Oswestry Disability Index (ODI-I). The Functional Rating Index (FRI) is a self-administered questionnaire composed by 10 items, scored from 0 (better condition) to 4 (worst condition), that evaluate pain, sleep, work and daily activity. The FRI's final score ranges from 0% to 100% (no disability to severe disability). The aim of the study is to translate, culturally adapt and validate the FRI in Italian (I-FRI). 104 patients were recruited for this study following inclusion/exclusion criteria. After signing the informed consent, each participant completed I-FRI, Oswestry Disability Index (ODI), Tampa Scale of Kinesiophobia (TSK) and Pain Catastrophizing Scale (PCS). All the patients have done the I-FRI re-test after 7 days from the first test administration. All statistical analyses have been performed using IBM-SPSS (Statistical Package for the Social Sciences) version 23.00. The results have been analyzed through the calculation of the Cronbach's alpha, the Intraclass Correlation Coefficient (ICC) and the Pearson's correlation coefficient.

Interventions

None (this is a non-interventional study)

Sponsors

University of Cagliari
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
CROSS_SECTIONAL

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Chronic Low Back Pain * Adult age * Reading/speaking Italian.

Exclusion criteria

* Acute low back pain (lasting up to 4 weeks) or subacute low back pain (lasting up to 12 weeks). * Cognitive impairment. * Disabling pathological conditions.

Design outcomes

Primary

MeasureTime frameDescription
Italian Version of Functional Rating Index (I-FRI)Baselineself-administered questionnaire composed by 10 items, scored from 0 (better condition) to 4 (worst condition), that evaluate pain, sleep, work and daily activity. The FRI's final score ranges from 0% to 100% (no disability to severe disability).

Secondary

MeasureTime frameDescription
ODI (Oswestry Disability Index)BaselineOswestry Disability Index; score varying from 0 to 50, with higher scores indicating greater disability
PCS (Pain Catastrophizing Scale)BaselinePain Catastrophizing Scale; score varying from 0 to 52, with higher scores indicating greater catastrophizing
pain NRS (Numerical pain Rating Scale)BaselineNumerical pain Rating Scale; score varying from 0 to 10, with higher scores indicating greater pain intensity
TSK (Tampa Scale of Kinesiophobia)BaselineThis self-report questionnaire assesses fear-avoidance behaviors. The investigators used the Italian 13-item version, with the reversed items removed, which has proven to be reliable and valid. Each item is scored using a four-point Likert scale, ranging from 1 (strongly disagree) to 4 (strongly agree). The total score is calculated by summing the individual item scores (range 13-52), with higher scores indicating greater kinesiophobia.

Countries

Italy

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026