# An Observational Study Comparing Multiple Sclerosis International Quality of Life Questionnaire (MusiQoL) and Multiple Sclerosis Quality of Life-54 Instrument (MSQOL-54) in Relapsing Multiple Sclerosis (RMS) Patients on Long-term Rebif® Therapy

> **NCT01141751** · — · COMPLETED · sponsor: **Merck KGaA, Darmstadt, Germany** · enrollment: 334 (actual)

## Conditions studied

- Multiple Sclerosis, Relapsing-Remitting

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01141751
- **Lead sponsor:** Merck KGaA, Darmstadt, Germany
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2005-09
- **Primary completion:** 2011-06
- **Final completion:** 2011-06
- **Target enrollment:** 334 (ACTUAL)
- **Last updated:** 2014-07-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01141751

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01141751, "An Observational Study Comparing Multiple Sclerosis International Quality of Life Questionnaire (MusiQoL) and Multiple Sclerosis Quality of Life-54 Instrument (MSQOL-54) in Relapsing Multiple Sclerosis (RMS) Patients on Long-term Rebif® Therapy". Retrieved via AI Analytics 2026-06-26 from https://api.ai-analytics.org/clinical/NCT01141751. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*