Table 1.
Hannon and Gibson (2005) | Tomlinson et al. (2006) | Kars et al. (2011) | Kars et al. (2010) | Bluebond-Langner et al. (2007) | Maurer et al. (2010) | Hinds et al.(2009) | Hechler et al. (2008) | Edwards et al. (2008) | Mack et al. (2005) | |
---|---|---|---|---|---|---|---|---|---|---|
Communication | X | X | X | X | X | X | X | X | X | X |
Extending time | X | X | X | X | X | X | ||||
Understanding prognosis | X | X | X | X | X | X |