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Table 3 List of possible confounding factors

From: Comparative impact of two continuing education activities targeted at COPD educators on educational outcomes: protocol for a non-randomized controlled study using mixed methods

Educational outcome

Confounding variable

Units, categories, or range

Instrument

Educators’ satisfaction

Educators’ learning

Educators’ competence

Educators’ performance

Age [12]

in years

Standardized form

Level of education [12]

<University

Standardized form

≥University

Motivation to participate in the CE activity [12]

Score: 0–6

Adapted from the MSLQ [58]

COPD patients’ outcomes

Smoking history [59]

in packs-year

SLCDC [37]

Dyspnea [60]

Medical Research Council dyspnea scale, grade: 1–5

SLCDC [37]

Social support [59]

Yes

SLCDC [37]

No

Comorbidity [60]

Yes

SLCDC [37]

No

Respiratory tract infections [59]

Yes

SLCDC [37]

No

Body mass index [60]

< 21

QSCH [39]

≥21 kg/m2

Age [61],

in years

QSCH [39]

Gender [62]

Women

QSCH [39]

Men

Previous exacerbations in the six preceding months [59, 60]

Yes

Telephone interviewer-administered questionnaire [63]

No

Levels of anxiety [60, 64]

Score: 0–21

HADS [65]

Levels of depression [60, 64]

Score: 0–21

HADS [65]

  1. Depending on the educational outcome, these variables will be measured in educators or in COPD patients
  2. HADS Hospital Anxiety and Depression Scale, MSLQ Motivated Strategies for Learning Questionnaire, QSCH Quebec Survey on Cardiovascular Health, SLCDC Survey on Living with Chronic Diseases in Canada