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Table 5 Relationship between patient ratings and ITC characteristics

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

Type of outcome variableMean scorePromoter (> = 9)Ratings > = 7Ratings > = 8Detractor (<=6)NPS
Type of modelRE-LinearRE-LogitRE-LogitRE-LogitRE-LogitRE-Linear
Log invasive treatments−0.073* (0.035)−0.123* (0.071)−0.103 (0.121)−0.174* (0.099)0.182 (0.151)0.027 (0.025)
FTE number of professionals0.002 (0.003)0.007 (0.006)0.008 (0.012)0.014 (0.009)−0.013 (0.016)−0.00 (0.002)
No chain membershipReferenceReferenceReferenceReferenceReferenceReference
Chain membership−0.163* (0.089)−0.133 (0.184)− 0.409* (0.238)−0.390* (0.212)0.504* (0.293)−0.077* (0.047)
For-profitReferenceReferenceReferenceReferenceReferenceReference
Non-profit−0.133 (0.114)−0.365 (0.233)− 0.355 (0.361)−0.446 (0.288)0.037 (0.429)−0.178*** (0.061)
Level of measurementPatient levelPatient levelPatient levelPatient levelPatient levelProvider level
ClusterID ITC + ID ChainID ITC + ID ChainID ITC + ID ChainID ITC + ID ChainID ITC + ID ChainID Chain
Observations16,50716,50716,50716,50716,50797
Number of groups686868686846
  1. Corrected for case-mix (ASA II & III), type of treatment and year
  2. ***p < 0.01,  < 0.05, *p < 0.1