SF-36 Scales Measures

SF-36 Scales Measures (adopted from: Jones, et. al. Health and Quality of Life Outcomes 2004)
Scale Description
Physical Component Summary (PCS) Summary measure which included: PF, RP, BP, VT, SF, RE, MH and GH
Physical functioning (PF) (Survey Items 3a through 3j) Ten questions asking for ratings of the extent to which the respondentís health limits them in their performance of physical activities.
Role-physical (RP) (Survey Items 4a through 4d) Four questions asking the extent to which the physical health of the person completing the scale limits them in their work or other usual activities in terms of time and performance.
Bodily pain (BP) (Survey Items 7 and 8) Two questions asking for the severity of pain experienced by the respondent and for the extent to which pain interferes with normal work, including work outside the home and housework.
General health (GH) (Survey Items 1, and 11a through 11d) 5 questions that ask the individuals to rate their current health status overall, their susceptibility to disease, and their expectations for health in the future.
Mental Component Summary (MCS) Summary measure which included: MH, RE, SF, VT, GH, BP, RP, and PF.
Vitality (VT) (Survey Items 9a, 9e, 9g and 9i) Four questions asking for subjective well-being ratings in terms of energy and fatigue
Social functioning (SF) (Survey Items 6 and 10) 2 questions on limitations in normal social functioning due specifically to health-related problems.
Mental Health (MH) (Survey Items 9b, 9c, 9d, 9f and 9h) 5 questions about the frequency of feelings representing the 4 major mental health dimensions.
Role-emotional (RE) (Survey Items 5a, 5b and 5c) 3 questions about whether emotional problems have interfered with accomplishments at work or other usual activities in terms of time, as well as performance.

How can the SF-36 Measures be used?

The 0-100 SF-36 scores are provided for historical purposes. The T-scores are a linear transformation of the 0-100 possible range scoring for the SF-36 scales that gives every scale the same mean (50) and standard deviation (10) in the US general population. It is recommended that the T-scores be used for analyses (variables ending with "_T"). The SF-36 physical (PCS) and mental (MCS) summary scores are also provided on the T-score metric. For comparison of the SEER-MHOS sample to the US general population, means for the US general population (age and gender adjusted to the SEER-MHOS sample) are included (variables ending with "sfm"). Finally, z-statistics testing the significance of difference between the sample and the US general population are provided (all highly statistically significant).