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Table 5 Sensitivity and subgroup analyses on SASD sample (Coefficients of opt-out variable)

From: Assessing the impact of state “opt-out” policy on access to and costs of surgeries and other procedures requiring anesthesia services

  Total number of surgical procedures Log of total number of surgical procedures
Main model (sample includes freestanding facilities) 1149.2 0.0601
  (1.06) (0.71)
Subgroups
 Non-freestanding 1333.9 0.129
  (1.08) (1.93)
 Freestanding −310.2*** −0.257***
  (−15.71) (−23.06)
Alternative definition of surgical cases
 Subset of selected procedures per facility usually requiring general anesthesia2 −22.84 −0.0916
  (−0.66) (−0.76)
Using partial covariates
 Exclude t-1 year case mix variables 537.3 0.0496
  (0.34) (0.48)
  1. Notes: [1] Hospital characteristics and county variables were not available for freestanding facilities; [2] procedures with CPT code of 19301, 19302, 23410, 23412, 23420, 23430, 23470, 23472, 23473, 23474, 23700, 24300, 24341, 24342, 24363, 24370, 24371, 29827, 29882, 29883, 42821, 42826, 47562, 47563, 47600, 47605, 49505, 49507, 49520, 49521, 49525, 49587, 49650, 49651, 58541, 58542, 58543, 58544, 58545, 58546, 58550, 58552, 58553, 58554, 58570, 58571, 58572, 58573, 58670, 58671; *p < 0.05; **p < 0.01; ***p < 0.001