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

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

	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)

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

ISSN: 2191-1991