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. 2011 May 27;11:402. doi: 10.1186/1471-2458-11-402

Table 3.

SF-36v2™ results in ME/CFS patients by gender

Norm-based scores

SF-36 scales and summaries Males (n = 37) Females (n = 133) P-value1

mean SDa mean SDa
Physical Component Summary 30.2 8.8 26.0 8.2 0.023
• Physical Functioning 31.5 13.2 26.7 9.5 0.026
• Role-Physical 25.3 9.2 25.4 7.9 0.840
• Bodily Pain 33.8 10.9 31.4 9.11 0.264
• General Health 28.4 9.7 28.3 7.5 0.993
Mental Component Summary 30.3 11.9 35.2 11.0 0.040
• Vitality 26.4 6.8 29.1 7.1 0.040
• Social Functioning 25.9 11.2 25.7 9.4 0.853
• Role-Emotional 28.5 17.2 32.0 14.5 0.364
• Mental Health 34.0 13.8 37.4 11.5 0.166

a SD = Standard Deviation

1 t-test. For all P-values lower than 0.05, except for the vitality score, the difference in means reached the value considered minimally important.