Table 3. Logistic Regression Models Estimating 30-Day Revision of Initial Pneumatic Retinopexy, by Day of Week of the Index Procedure^a.

Characteristic	OR (95% CI)	P Value
Day of index pneumatic retinopexy (base: Wednesday)
Sunday	1.62 (1.07-2.45)	.02
Monday	1.06 (0.86-1.32)	.57
Tuesday	1.03 (0.83-1.28)	.80
Thursday	0.92 (0.74-1.15)	.48
Friday	0.89 (0.72-1.11)	.29
Saturday	1.07 (0.79-1.45)	.65
Year of surgery	1.01 (0.98-1.04)	.64
Age at surgery, y	0.99 (0.98-0.99)	<.001
Sex (base: male)
Female	0.73 (0.64-0.84)	<.001
Ocular comorbidities
Myopia	1.50 (0.96-2.36)	.08
Pseudophakia	1.92 (0.96-3.86)	.07
Lattice degeneration	1.24 (0.99-1.55)	.06
Vitreous hemorrhage	1.94 (1.49-2.53)	<.001
Insurance plan (base: PPO)
EPO	1.25 (0.98-1.60)	.07
HMO	0.67 (0.39-1.15)	.15
POS	0.96 (0.78-1.20)	.74
Comprehensive	0.94 (0.72-1.24)	.68
POS with capitation	1.22 (0.59-2.52)	.58
CDHP	0.82 (0.61-1.09)	.17
HDHP	0.87 (0.63-1.20)	.39
Place of surgery
Inpatient hospital	2.17 (0.56-8.33)	.26
Outpatient hospital	0.92 (0.71-1.18)	.51
Emergency department	0.44 (0.05-3.67)	.45
Ambulatory surgical center	0.95 (0.60-1.49)	.81
Other	0.54 (0.12-2.42)	.42

Abbreviations: CDHP, consumer-driven health plan; EPO, exclusive provider organization; HDHP, high-deductible health plan; HMO, health maintenance organization; POS, point of service; PPO, preferred provider organization; OR, odds ratio.

^aDefined as subsequent pneumatic retinopexy, scleral buckle, or pars plana vitrectomy within 30 days of the index procedure.