Table 4.

Individual cost effectiveness ratios alongside a critical pathway on TKA are associated with algo-functional status before surgery

		individual cost effectiveness	individual cost effectiveness
	WOMAC index [%] before TKA	≤100 €/%	> 100 €/%
before pathway implementation
	≤ 40%	25%	75%
	> 40%	52%	48%
after pathway implementation, without personal briefing
	≤ 40%	24%	76%
	> 40%	56%	44%
after pathway implementation and personal briefing
	≤ 40%	13%	87%
	> 40%	47%	53%

relative frequencies of individual cost effectiveness ratios ≤ 100 €/% between partial cost sum {€] from the hospital's perspective and three months WOMAC change after TKA [%], assessed in 132 patients, who underwent TKA before implementation of a critical pathway on TKA, versus 128 patients, who underwent TKA after path implementation (the latter being stratified for attendance of a personal briefing as a voluntary part of the pathway), stratified for the patients' total WOMAC osteoarthritis index before surgery [„≤ 40%" versus „> 40%"]