Table 3. In-hospital complication rates stratified by surgeon volume quartiles.

Data sources	First SV quartile	Second SV quartile	Third SV quartile	Fourth SV quartile	P value
Nationwide Inpatient Sample	1–2 per year (n=367)	3–7 per year (n=311)	8–26 per year (n=214)	27–92 per year (n=202)	–
Any complication	88 (24.0)	80 (25.7)	62 (29.0)	75 (37.1)	0.007
Hypocalcemia	50 (13.6)	48 (15.4)	42 (19.6)	47 (23.3)	0.018
Vocal cord paralysis	12 (3.3)	18 (5.8)	12 (5.6)	13 (6.4)	0.29
State Inpatient Database	1–8 per year (n=348)	9–26 per year (n=378)	27–45 per year (n=214)	46–100 per year (n=295)	–
Any complication	87 (25.0)	69 (18.3)	43 (20.1)	59 (20.0)	0.147
Hypocalcemia	56 (16.1)	39 (10.3)	22 (10.3)	33 (11.2)	0.07

Data are presented as n (%). SV, surgeon volume.