I had the following letter published in The Lancet re GETSET in 2018:
Graded exercise self help
for chronic fatigue
syndrome in GETSET
The mean score for physical
functioning (measured by the Short
Form-36 [SF-36] subscale)1 for people
aged 35–44 years is 93·3 (SD 13·4).2
Participants in the GETSET trial by
Lucy Clark and colleagues3 (July 22,
p 363) had a mean age of 38·1 years in
the active treatment arm (guided
graded exercise self-help [GES] group)
and 38·7 years in the control group.
After the short 12-week intervention,
participants’ mean self-reported
physical functioning score using the
SF-36 scale was 55·7 (23·3) in the GES
group, an increase from 47·3 (22·2)
before the intervention, compared
with a slight increase in physical
functioning in the control group from
50·1 (22·6) to 50·8 (25·3).3 Clark and
colleagues state that “GES significantly
improved fatigue and physical
functioning compared with SMC
[specialist medical care] alone”.
However, this modest change in a self reported
outcome measure in a nonblinded
trial, in which bias is highly
likely without use of objective
measures of activity, is extremely
unlikely to translate to a clinically
meaningful improvement for
patients. Nor does this change return
them anywhere close to healthy and
robust good physical functioning
compared with controls, which
patients heartily desire. Overall, these
observations suggest such modest
improvements are unlikely to be due
to countering deconditioning and
exercise avoidance as proposed by the
authors, but are much more likely to
be accounted for by nothing more
than the placebo effect, in other words
a desire by patients to please their
therapists. Moreover, there was no
attempt during this trial to obtain
measurable objective activity levels to
ascertain if patients increased exercise
and activity or complied with the
intervention at all.
I declare no competing interests.
Joan S Crawford
joan.crawford1@outlook.com
1 McHorney CA, Ware JE Jr, Raczek AE. The MOS
36-item Short-Form Health Survey (SF-36): II.
Psychometric and clinical tests of validity in
measuring physical and mental health
constructs. Med Care 1993; 31: 247–53.
2 Bowling A, Bond M, Jenkinson C, Lamping DL.
Short Form 36 (SF-36) Health Survey
questionnaire: which normative data should
be used? Comparisons between the norms
provided by the Omnibus Survey in Britain,
the Health Survey for England and the Oxford
Healthy Life Survey. J Public Health Med 1999;
21: 255–70.
3 Clark LV, Pesola F, Thomas JM, Vergara-
Williamson M, Beynon M, White PD. Guided
graded exercise self-help plus specialist
medical care versus specialist medical care
alone for chronic fatigue syndrome (GETSET):
a pragmatic randomised controlled trial.
Lancet 2017; 390: 363–73.
Others published critical responses too. I suspect they/PDW got a bit too woo hoo about publishing further. I think they do need to publish follow up results. PDW is one of many in the team - there are plenty others in the group who can write and publish. It was public money after all. To be fair it can take a while to get published once the data is collected. A polite email to one of the GETSET team might be illuminating
Joan Crawford
Counselling Psychologist
UK