eMSQOL-29: Prospective validation of the abbreviated, electronic version of MSQOL-54

Rosalba Rosato, Silvia Testa, Antonio Bertolotto, Francesco Scavelli, Ambra M Giovannetti, Paolo Confalonieri, Francesco Patti, Clara Grazia Chisari, Alessandra Lugaresi, Erika Pietrolongo, Maria Grazia Grasso, Ilaria Rossi, Anna Toscano, Barbara Loera, Andrea Giordano, Alessandra Solari

Research output: Contribution to journalArticlepeer-review


BACKGROUND: We recently devised a shortened version of the 54-item Multiple Sclerosis Quality of Life (MSQOL-54) in paper (MSQOL-29, consisting of 25 items forming 7 subscales and 4 single items, and one filter question for 3 'sexual function' items) and electronic format (eMSQOL-29).

OBJECTIVES: To prospectively assess eMSQOL-29 psychometric properties, acceptability/equivalence versus MSQOL-29.

METHODS: Multiple sclerosis (MS) patients ( n = 623; Expanded Disability Status Scale (EDSS) range 0.0-9.0) completed eMSQOL-29, Hospital Anxiety and Depression Scale, Functional Assessment of MS (FAMS), European Quality of life Five Dimensions-3L, and received EDSS and Symbol Digit Modalities Test (SDMT). Equivalence versus MSQOL-29 was assessed in 242 patients (randomized cross-over design).

RESULTS: 'Sexual function' items were filtered out by 273 patients (47%). No multi-item scale had floor effect, while five had ceiling effect. Cronbach's alpha range was 0.88-0.90. Confirmatory factor analysis showed good overall fit and the two-factor solution for composite scores was confirmed. Criterion validity was sub-optimal for 'cognitive function' (vs SDMT, r = 0.25) and 'social function' (vs FAMS social function, r = 0.38). eMSQOL-29 equivalence was confirmed and its acceptability was good.

CONCLUSION: eMSQOL-29 showed good internal consistency, factor structure and no floor effect, while most subscales had some ceiling effect. Criterion validity was sub-optimal for two subscales. Equivalence and acceptability were good.

Original languageEnglish
Pages (from-to)1352458518774935
JournalMultiple Sclerosis
Publication statusE-pub ahead of print - May 1 2018


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