Summary baseline statistics in allocated and attended groups
| Experimental group (n=72) | Active control group (n=72) | Analysed in experimental group (n=22) | Analysed in active control group (n=36) | |
| Sex (female) | 48 (66.7%) | 48 (66.7%) | 17 (77.3%) | 25 (69.4%) |
| Age (years) | 32.9 (24.4–41.6) | 31.8 (23.3–42.9) | 27.0 (22.5–40.8) | 26.7 (21.9–38.7) |
| Nationality (Belgian) | 69 (95.8%) | 69 (100%) | 21 (95.5%) | 36 (100%) |
| Education | ||||
| Primary | 2 (2.8%) | 0 (0%) | 0 (0%) | 1 (2.8%) |
| Secondary | 35 (48.6%) | 38 (52.8%) | 9 (40.9%) | 19 (52.8%) |
| Higher | 35 (48.6%) | 34 (47.2%) | 13 (59.1%) | 16 (44.4%) |
| Profession | ||||
| Employed | 51 (70.8%) | 44 (61.1%) | 12 (54.5%) | 24 (66.7%) |
| Retired/disabled | 4 (5.6%) | 2 (2.8%) | 2 (9.1%) | 0 (0%) |
| Housewife | 1 (1.4%) | 3 (4.2%) | 1 (4.5%) | 1 (2.8%) |
| Unemployed | 3 (4.2%) | 7 (9.7%) | 0 (0%) | 4 (11.1%) |
| Student | 13 (18.1%) | 16 (22.2%) | 7 (31.8%) | 7 (19.4%) |
| Relationship status (no partner) | 38 (52.8%) | 33 (45.8%) | 12 (54.5%) | 20 (55.6%) |
| Red Cross volunteer (no) | 66 (91.7%) | 63 (87.5%) | 18 (81.8%) | 34 (94.4%) |
| Previous first aid training (no) | 49 (68.1%) | 44 (61.1%) | 13 (59.1%) | 24 (66.7%) |
| Experienced a life-threatening emergency (no) | 56 (77.8%) | 49 (68.1%) | 18 (81.8%) | 27 (75.0%) |
| Multiple choice test score (max. possible score=18) | 9 (7–10) | 8 (7–10) | 10 (7–12) | 8 (7–11) |
Medians (Q1—Q3) or frequencies are reported.