Both scales report the physical and psychological aspects of QoL in two summary scores. For both scales changes in mean scores from baseline through the 12th infusion were evaluated after adjusting for baseline patient-level and treatment characteristics.
SF-12v2 Physical Component Summary (PCS) scores improved significantly from baseline (BL 34.25, 12th 36.66; p<0.001). Similar improvements were observed in the Mental Component Summary (MCS) scores, which also improved significantly from baseline (BL 43.13, 12th 46.77; p<0.001).
After controlling for covariates, a statistically significant improvement was also observed in MSIS-29 physical impact scores (BL 47.38, 12th 40.43; p<0.001). Similarly, MSIS-29 psychological impact scores showed statistically significant improvements (BL 42.01, 12th 34.09; p<0.001) over time.
The results of these findings are consistent with results from pivotal clinical trials and show the beneficial impact of TYSABRI on QoL in MS patients. Results show that improvements were seen as early as three months and were sustained for 12 months.
The poster titled Improvement in Health-Related Quality of Life in Multiple Sclerosis Patients Receiving Natalizumab in the United States (P02.166) was made available for viewing on April 13 from 3-7:30 p.m. EDT. The poster titled Effect of Natalizumab on Disease-Specific Quality of Life after One Year of Natalizumab Treatment (P02.164) was made available for viewing on April 13 from 3-7:30 p.m. EDT.
Fatigue and Cognition Study Results
After one year of treatment, patients reported:
Cognitive function was measured by the six-question Medical Outcomes Study Cognitive Functioning Scale (MOS-Cog Scale, score range 6-36) wi
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