Is there a volume-quality relationship within the independent treatment centre sector? A longitudinal analysis

Table 3 AIC scores

	Linear	SQRT	Cubic	Logarithmic
Structural and process composite	2152	2147	2144	2138
Postoperative infections	377.4	352.0	339.9	311.7
Pooled data - postoperative infections	40.90	39.10	38.60	38.30
Aesthetic postoperative infections	408.6	403.7	400.5	393.5
Patients ratings – mean score	59,435	59,433	59,432	59,430
NPS	− 128.1	−128.2	−128.3	−128.5

ISSN: 1472-6963