Table 6 Pre‐ and post‐test means and gain of sumscores on knowledge, attitude, actual behaviour, and intended behaviour of forklift drivers.
| Experimental group (n = 65) | Control group (n = 34) | 90% CI for difference | |
|---|---|---|---|
| Mean sum (SD) | Mean sum (SD) | ||
| Knowledge | |||
| Pretest mean M1 | 15.9 (2.8) | 16.2 (2.4) | (−1.5 to 0.7) |
| Post‐test mean M2 | 16.5 (2.3) | 16.3 (3.0) | (−1.0 to 1.3) |
| Gain score M2‐M1 | 0.6 (2.2) | 0.1 (3.1) | (−0.5 to 1.6) |
| Attitude | |||
| Pretest mean M1 | 13.5 (10.2) | 16.1 (9.5) | (−6.8 to 1.7) |
| Post‐test mean M2 | 18.1 (10.7) | 16.5 (9.4) | (−2.7 to 6.0) |
| Gain score M2‐M1 | 4.7 (8.8) | 0.6 (9.7) | (0.6 to 7.3)* |
| Actual behaviour | |||
| Pretest mean M1 | 2.9 (9.7) | 0.7 (10.3) | (−2.2 to 6.8) |
| Post‐test mean M2 | 4.0 (9.7) | 3.4 (8.1) | (−3.2 to 4.3) |
| Gain score M2‐M1 | 1.3 (7.7) | 3.2 (6.9) | (−4.6 to 0.8) |
| Intended behaviour | |||
| Mean sum score | 8.3 (1.7) | 6.8 (1.7) | (0.8 to 2.1)** |
*p for difference = 0.03, t test, one‐tailed; **p<0.001, t test, one‐tailed.