Table 1.
Incidence of Retinal Artery Occlusion among Patients Undergoing Cardiac Surgery in the National Inpatient Sample 1998–2013
| Year | Affected with RAO | Total No. of Cardiac Surgeries | Incidence per 10 000 (95% CI) |
|---|---|---|---|
| 1998 | 365 | 435 126 | 8.39 (6.64–10.76) |
| 1999 | 359 | 414 628 | 8.65 (6.92–10.96) |
| 2000 | 241 | 443 465 | 5.44 (4.18–7.23) |
| 2001 | 230 | 451 122 | 5.11 (3.87–6.90) |
| 2002 | 290 | 423 126 | 6.85 (5.36–8.88) |
| 2003 | 272 | 413 322 | 6.57 (5.11–8.61) |
| 2004 | 253 | 368 531 | 6.86 (5.26–9.11) |
| 2005 | 206 | 344 026 | 5.98 (4.47–8.19) |
| 2006 | 251 | 374 144 | 6.71 (5.16–8.91) |
| 2007 | 249 | 317 194 | 7.84 (5.99–10.46) |
| 2008 | 344 | 336 462 | 10.22 (8.17–12.97) |
| 2009 | 333 | 355 773 | 9.37 (7.43–12.01) |
| 2010 | 289 | 293 912 | 9.84 (7.67–12.85) |
| 2011 | 267 | 300 103 | 8.90 (6.91–11.66) |
| 2012 | 330 | 299 920 | 11.00 (8.70–14.14) |
| 2013 | 285 | 301 980 | 9.44 (7.32–12.37) |
| 1998–2013 | 4564 | 5 872 833 | 7.77 (7.29–8.29) |
CI = confidence interval; RAO = retinal artery occlusion.
Results are national estimates using National Inpatient Sample (NIS) weighting and the Stata (StataCorp LP, College Station, TX) survey function. Respective 95% CIs appear in parentheses. See “Methods” for International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) diagnostic codes.