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Table 1 Modification of the study instrument and internal consistency reliability of the subscales

From: Working in preventive medicine or not? Flawed perceptions decrease chance of retaining students for the profession

Original instrument
4 subscales—47 items
Modified instrument
7 subscales—44 items
Cronbach’s α (doctors) Cronbach’s α (students)
1. Knowledge and skills (13 items) 1. PM knowledge and skills (11 items) (e.g., Epidemiology, Health promotion) .75 .85
2. Basic sciences (4 items) (e.g., Anatomy, Chemistry, Pharmacotherapy) .67 .66
2. Nature of medical-professional practice (7 items) 3. Clinical practice (7 items) (e.g., Referral, Diagnostic skills, Treatment of patients) .58 .59
3. Types of patients, contacts, and complaints (10 items) 4. Community practice (9 items) (e.g., Simple complaints, Long relationships with patients) .84 .75
4. Characteristics of the daily work (17 items) 5. Daily work characteristics (5 items) (e.g., Move from place to place, Diversity of work) .66 .74
6. PM working stress (5 items) (e.g., Stressful work, Long working days, Routine work) .56 .64
7. PM working benefits* (3 items) (e.g., High income, High prestige) .13 .40
  1. *This subscale was taken out due to low Cronbach’s alpha for both doctors and students