Seven of the current eight multi-item variables were measured: social functioning, role limitations due to physical problems, role limitations due to emotional problems, mental health, energy and vitality, pain, and general perception of health.
COPD-PS scores had higher correlations with scales designed to measure physical functioning, role limitations due to physical health, and general health status.
The SF-36 consists of 8 domains measuring physical functioning, role limitation due to physical health problems, bodily pain, general health, vitality, social functioning, role limitation due to emotional health problems and mental health.
22, 23 The SF12 estimates an individual's health-related quality of life and functioning across eight conceptual measures (physical functioning, role limitations due to physical health, emotional problems and mental health, bodily pain, general health, vitality, and social functioning).
This tool includes eight scales that assess the following general health measures: physical functioning (PF), role limitations due to physical health problems (role-physical, RP), body pain (BP), general health perceptions (GH), vitality (VT), social functioning (SF), role limitations due to emotional problems (role-emotional, RE), and mental health (MH).
The SF-36 contains 36 items to measure 8 domains: physical functioning, role limitations due to physical problems, bodily pain, general health perceptions, energy/vitality, social functioning, role limitations due to emotional problems, and mental health [ 21].
21 The eight subscales measure the physical functioning, role limitations due to physical health problems, bodily pain, general health, vitality, mental health, social functioning, and role limitations due to emotional health.
Health-related quality of life was measured with the RAND 36-item Health Survey 1.0 [ 101, 102] which measures individuals' physical and social functioning, role limitations due to physical or emotional problems, mental health, pain, general health perception and health change.
SF-12 – This is a generic measure of quality of life which measures eight dimensions: physical function (ADL); role limitations (handicaps) secondary to physical impairments; physical pain; general health, vitality (fatigue and lack of energy); social functioning; limitations due to emotional problems; and mental health (psychological distress and well-being).
The instrument measures physical functioning, social functioning and role limitations because of physical and emotional problems.
