Pm. Rothwell et al., DOCTORS AND PATIENTS DONT AGREE - CROSS-SECTIONAL STUDY OF PATIENTS AND DOCTORS PERCEPTIONS AND ASSESSMENTS OF DISABILITY IN MULTIPLE-SCLEROSIS, BMJ. British medical journal, 314(7094), 1997, pp. 1580-1583
Objectives: To compare the judgments of clinicians on which domains of
health in the short form questionnaire (SF-36) would be most importan
t to patients with multiple sclerosis with the opinions of patients th
emselves; to compare assessment of physical disability in multiple scl
erosis by a clinician using Kurtzke's expanded disability status scale
and a non-clinically qualified assistant using the Office of Populati
on Census and Surveys' (OPCS) disability scale with self assessment of
disability and other domains of health related quality of life by pat
ients using tile SF-36 and the EuroQol questionnaire; and to compare t
he scores of patients for each domain of the SF-36 with control data m
atched for age and sex. Design: Cross sectional study. Setting: Clinic
al department of neurology, Edinburgh. Subjects: 42 consecutive patien
ts with multiple sclerosis attending a neurology outpatient clinic for
review or a neurology ward for rehabilitation. Main outcome measures:
Scores on the SF-36; EuroQol; Kurtzke's expanded disability status sc
ale; the OPCS disability scale. Results: Patients and clinicians disag
reed on which domains of health status were most important (chi(2) = 2
1, df = 7, P = 0.003). Patients' assessment of their physical disabili
ty using the physical functioning domain of the SF-36 was highly corre
lated with the clinicians' assessment (r = -0.87, P < 0.001) and the n
on-clinical assessment (r = -0.90, P < 0.001). However, none of tile m
easures of physical disability correlated with overall health related
quality of life measured with EuroQol. Quality of life correlated with
vitality, general health, and mental health in the SF-36, each of whi
ch patients rated as more important than clinicians and for each of wh
ich patients scored lower than tile controls. Conclusions: Patients wi
th multiple sclerosis, and possibly those with other chronic diseases,
are less concerned than their clinicians about physical disability in
their illness. Clinical trials in multiple sclerosis should assess th
e effect of treatment on the other elements of health status that pati
ents consider important, which are also affected by the disease proces
s, are more closely related to overall health related quality of life,
and may well be adversely affected by side effects of treatment.