Table 1b: Included Measures Conceptual Model and Measurement Model
Conceptual Picker MSD Modified Perceived Trust in Physician Treatment
Model Questionnaire Involvement in Scale Helpfulness
Care Scale Questionnaire
concept patient satisfaction doctor-patient trust within patient- perceived
communication doctor relationship helpfulness of
treatment
modalities
Domains experiences of 1) health care trust not described
health care provider facilitation
2) patient
information
provision 3) patient
participation in
decision making 4)
patient involvement
in seeking or
sharing information
conceptual and performance previous studies studies examining Conceptual model
empirical basis for frameworks used to examining influence relationship between based on previous
domain and item evaluate occurrence of various aspects trust in therapeutic study examining
content of particular of doctor-patient relationship and use of visual
processes or events communication on adherence to analogue scaling
associated with high patient outcomes recommendations to measure
quality health care subjective pain
intensity;
Measurement
Model
measurement level ordinal interval interval interval
number of scales 1 4 1 1
number of items 16 20 11 10
scale items coded 4 distinct 1 distinct construct 3 distinct factors
dimensionality dichotomously constructs established by established by
established by principal exploratory factor
principal components analysis analysis and
components orthogonal
analysis rotation
scale variability not applicable; means, SDs and means, SDs and means, SDs
items analyzed range of scores ceiling effects reported
individually as reported for each reported
dichotomous sub-scale
problem scores,
either as no
problem or a
problem
rationale for scale NA values assigned to values assigned to response options
score derivation each response each response derived from
category; composite category; unweighted previous study;
score derived for mean of the response options
each sub-scale responses assigned to 10
transformed to 0- point VAS scale;
100 scale values assigned to
each response
option
Legend
NA= Not Applicable
SD= Standard Deviation
Table 1c: Included Measures Validity
Validity Picker MSD Modified Perceived Trust in Physician Treatment
Questionnaire Involvement in Care Scale Helpfulness
Scale Questionnaire
a) target population people with patients with chronic pain patients people using multiple
musculoskeletal persistent pain modalities for
disorders comprehensive pain
treatment
b) study population people with low breast cancer patients rheumatoid arthritis, people undertaking
back pain with persistent pain osteoarthritis and treatment at two
fibromyalgia patients chronic pain clinics
c) target population yes no no information no
involved in item
selection
d) measure’s formative: intended not explicitly stated: discriminative: formative: intended to
intended purpose to monitor described as useful intended to identify provide administrative
provider’s tool for both clinical people’s level of trust and program personal
performance in practice and research with information to
specific aspects of compare treatments
care
e) a priori NA hypotheses for hypotheses about hypotheses about
construct validity correlations between relationships between relationships between
hypotheses scales and age trust and medical item scores and
,socioeconomic status, skepticism, role in exercise programs,
ethnicity, distress, decision making role educational and
satisfaction with care, and demographic psychological
and pain related variables programs, similar
barriers types of treatment and
other outcome
measures
Legend
NA= Not Applicable
Table 1d: Included Measures Reliability
Picker MSD Modified Perceived Trust in Physician Treatment
Questionnaire Involvement in Scale Helpfulness
Care Scale Questionnaire
a) Internal
Consistency
reliability estimates Kuder-Richardson Cronbach’s α Cronbach’s α = Cronbach’s α =0.89
for total scale score 20 test =0.86 =0.87 0.87
reliability estimates NA all Cronbach α sub- NR NR
for each scale and scale values >0.70;
subscale range 0.80-0.90
b) Test-Retest
Reliablity
rationale for NR NR NR NR
intervals between
test-retest
sample size NR NR NR 19
test-retest statistics NR NA NR Pearson’s r= 0.86
for total scale
test-retest statistics NA NA NA NR
for each sub-scale
c) Measure
Number Required
for Reliable Mean
Measure Score
NR NA NA NR
Legend:
NA=Not Applicable
NR= Not Reported
Table 1e: Included Measures Responsiveness
Picker MSD Modified Perceived Trust in Physician Treatment
Questionnaire Involvement in Scale Helpfulness
Care Scale Questionnaire
evidence of change NA NR NR pre/post treatment
in scores and follow-up means
and standard
deviations presented
for all items and
relevant measures
longitudinal data NA NR NR expected correlations
assessed by testing between change in
predefined items scores
hypotheses pre/post treatment
regarding expected and change in
correlations pre/post treatment
scores on various
measures detailed
above hypotheses NA NR NR Over 75% of
confirmed hypotheses
confirmed
time interval in NA NR NR 2 time intervals:
which pre/post treatment
responsiveness was interval unspecified,
assessed reported as 6-10
visits; follow-up
interval unspecified,
reported as 3-6
months post
treatment
intervention used to NA NR NR multidisciplinary
evaluate intervention offered
responsiveness at pain clinic
Legend:
NA= Not Available
NR= Not Reported
Table 1f: Included Measures Interpretability
Picker MSD Modified Trust in Physician Treatment
Questionnaire Perceived Scale Helpfulness
Involvement in Questionnaire
Care Scale
How data from the scale scores scale scores scale scores scale scores
instrument should be reported reported reported reported
reported and descriptively descriptively descriptively descriptively
displayed
Benchmarks to NR NR NR NR
facilitate
interpretations of
scores
Legend:
NR= Not Reported
Table 1g: Included Measures Administrative and Respondent Burden
Picker MSD Modified Perceived Trust in Treatment
Questionnaire Involvement in Care Physician Scale Helpfulness
Scale Questionnaire
a) respondent
Reading and NR reading and NR Information stating
comprehension level comprehension level measure may be
detailed not stated; authors completed by
state that it may be patients with limited
completed by educational
patients with a range backgrounds;
of educational and reading and
cultural comprehension level
backgrounds unspecified
Time taken to NR Described as brief; NR NR
complete instrument means and standard
deviations not
reported
Any special NA NA NA NA
requirements or
requests made of
respondent detailed
time or NA Validated in breast NA NA
circumstances the cancer population,
instrument is not but no information
suitable for about when it may
administration be unsuitable to
administer in this
population
Evidence that NA Validated in breast NA NA
instrument places no cancer population,
undue physical or but no evidence
emotional strain on presented regarding
respondents emotional strain
placed on
respondents
b) administrative
Description of no resources no resources no resources No resources
resources required required other than required other than required other required other than
for administration paper copy of paper copy of than paper copy paper copy of
measure measure of measure measure
Time taken to NA NR NR Described as
administer requiring little time
instrument for each to administer; means
mode of and standard
administration deviations not
Reported
Amount of training NR Described as easily NR NR
and level of scored but no
education required specific information
to administer presented
instrument
described
Legend:
NA= Not Applicable
NR= Not Reported
Table 1h: Included Measures Cultural and Language Adaptations
Perceived Involvement in Treatment
Care Scale Helpfulness
Questionnaires
Conceptual equivalence no conceptual stated for use among
methods equivalence methods used different cultural
groups, but no
conceptual
equivalence methods
used
Linguistic equivalence translated into Spanish NR
methods from the original English
version, and then back
translated from Spanish
Significant differences NR NR
between original and
translated versions
Methods to reconcile NR NR
inconsistencies between
versions
Legend:
NR= Not Reported