Assignment: The Survey Instrument

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Assignment: The Survey Instrument

Assignment: The Survey Instrument

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White, non-Hispanic). The South Boston Com-

munity Health Center is a community health centre

affiliated with BMC, which serves a mostly White,

non-Hispanic, low-income patient population.

Survey instrument

The survey instrument included a cover letter, 23

closed-ended questions and two open-ended

questions. Much of the content was derived from

instruments used in previously published studies

by Holmes-Rovner et al. and Graham et al.6,15

The cover letter briefly described the purpose of

the study, a statement that participation was

completely voluntary, the approximate amount

of time required to complete the survey, and a

statement that all responses are anonymous and

confidential. The closed-ended questions include

one item related to eligibility [confirmation of

participation in the clinical trial (yes ⁄no)], two items related to demographics (provider degree

and year of graduation), 12 items related to

perspectives on the impact of the tool on various

patient and provider components of SDM for

Colorectal cancer screening decision aid, P C Schroy, S Mylvaganam and P Davidson

� 2011 John Wiley & Sons Ltd Health Expectations, 17, pp.27–35


CRC screening (see Table 1), and eight items

related to perspectives on implementation or

content modification (see Tables 2 and 3). The

framing of the questions inferred a comparison

between patients exposed to the decision aid and

those not exposed, i.e., standard care patients,

regardless of their involvement in the study. All

of the items related to SDM used a 5-point Likert

scale ranging from 1 (strongly disagree) to 5

(strongly agree). Six of the items related to

implementation or content modification also

used the same 5-point Likert scale, and two used

a single best answer format. The two open-ended

questions inquired about suggestions for

improving the decision aid and complaints. The

questionnaire took �10 min to complete.

Statistical analyses

Descriptive statistics were used to characterize

the study population and response data for all

closed-ended questions. Frequency data for the

5-point Likert scale

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