Table 3

Frequencies and descriptive statistics of discussion activity in the revised and unrevised paper discussions
analysis units of revised papers (n = 24) analysis units of unrevised papers (n = 23) Mann–Whitney U test Effect size (Cohens d’)
frequency median (min.-max.) frequency median (min.-max.) p-value
Collaborative problem solving activities (total of category 1.-7.) 1028 36 (15–94) 554 20 (1–53) P< .001 1.08
Outside activity Category 1. 29 1 (0–10) 26 1 (0–4) P < .716 0.05
Non-task-focussed activity (total of category 2. & 3.) 239 7.5 (0–31) 143 6 (0–15) P < .179 0.57
Category 2. Social Relation 189 5.5 (0–26) 96 3 (0–11) P < .071 0.68
Category 3. Interaction Management 50 2 (0–19) 47 1 (0–7) P < .610 0.04
Task-focussed activity (total of category 4.-7.) 760 29 (11–65) 385 15 (0–45) P< .000 1.17
Category 4. Task Management 64 2 (0–19) 28 1 (0–7) P < .107 0.48
Category 5. Opinions 481 17.5 (10–40) 269 10 (0–30) P< .000 1.04
Category 6. Argumentation 186 7.5 (0–19) 80 4 (0–9) P< .005 0.98
Category 7. Broaden and Deepen 29 0 (0–5) 8 0 (0–5) P< .016 0.54

Koops et al.

Koops et al. BMC Medical Education 2012 12:79   doi:10.1186/1472-6920-12-79

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