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Table 1 Characteristics of the 124 publications included in the scoping review

From: Effectiveness of problem-based learning methodology in undergraduate medical education: a scoping review

Characteristic of the publication

Number (percentage)

Year of publication

 1990-1999

27 (22%)

 2000-2009

46 (37%)

 2010-2021

51 (41%)

Continents and countriesa

 Asia

45 (36.3%)

  China (16), Saudi Arabia (12), Egypt, India, Nepal and United Arab Emirates (2) and otherb nine countries (1)

 North America

39 (31.5%)

  United States of America (27) and Canada (12)

 Europe

22 (17.7%)

  Turkey (5), Germany and United Kingdom (4), Spain (3), France (2) and otherc four countries (1)

 Africa

7 (5.6%)

  South Africa (4), Botswana, Ghana and Uganda (1)

 Oceania

6 (4.8%)

  Australia (5) and New Zealand (1)

 South America

5 (4.0%)

  México (2), Argentina, Chile and Trinidad & Tobago (1)

Study population

 Students

94 (75.8%)

 Students and tutors

16 (12.9%)

 Tutors

6 (4.8%)

 Not specified

8 (6.5%)

Study design

 Survey or questionnaire

45 (36.3%)

 Comparative non-randomized study

32 (25.8%)

 Descriptive experience

21 (16.9%)

 Comparative and randomized study

16 (12.9%)

 Expert opinion, editorial or comment

5 (4.0%)

 Systematic review and meta-analysis

4 (3.2%)

 Narrative review

1 (0.8%)

Comparator

 Without comparison

66 (53.2%)

 With traditional or lecture-based learning

56 (45.2%)

 With simulation

2 (1.6%)

Main Outcomed

 Performance

56 (45.2%)

 Student satisfaction

36 (29.0%)

 Knowledge retention

15 (12.1%)

 Not specified

8 (6.5%)

 Tutor satisfaction

6 (4.8%)

 Other

3 (2.4%)

  1. aThe number of publications of each country appears in parentheses.
  2. bIncluding: Bahrain, Iran, South Korea, Pakistan, Philippines, Singapore, Sri Lanka, Taiwan and Vietnam.
  3. cIncluding: Belgium, Georgia, Netherlands and Sweden.
  4. dForty-eight studies included secondary outcomes: including student satisfaction (24), tutor satisfaction (9), knowledge retention (5), social and/or communication skills (5), reasoning (1) and other outcomes (4)