| 1. Individual (Rothschild et al 1999)16 | | A. Motivation: willingness of individuals to undertake the necessary actions to commit to the intervention | | 8 | 6 | 4 |
| | B. Ability: capability of individuals to do something that requires specific skills, knowledge, experience and attitude | | 6 | 3 | 3 |
| 2. Environment (Shain and Kramer 2004)17 | | A. Social support: supportiveness of family, friends, co-workers and others towards the intervention | | 3 | 1 | 2 |
| | B. Convenience and easy accessibility: availability of resources such as enough time to transfer patients, enough lifting devices, trained staff, etc | | 14 | 18 | 7 |
| | C. Management support: commitment of employers to the intervention | | 1 | – | 2 |
| | D. Supportive management climate: organisation of work in ways that promote rather than hinder the intervention | | 5 | 4 | 4 |
| | E. Wide appeal: attractiveness of the intervention to a wide variety of workers | | 1 | 1 | – |
| | F. Interactivity: reinforcement of the intervention by other work practices | | 1 | – | 1 |
| Evanoff et al, 200312 | | G. Patient-related factors | | 4 | 3 | 2 |