Relationships between Comfort, HSBs, and InI constitute the third part of the theory. Tests of the theory can be on the first part, the second part, the third part, or the whole theory (article). In addtion, nurse comfort has been addressed by Comfort Theory (2003). Much excitement has been generated by linking nurse comfort (or nurse satisfaction) to increased patient comfort and to HCHAPS scores, after an institution adopts CT as its model of care.