Table. Baseline Patient Demographics and Surgical Factors Stratified by Initial Procedure Performed.
| Characteristic | Patients, No. (%) | |||
|---|---|---|---|---|
| Facility-based simple probing (n = 11 338) | Office-based simple probing (n = 2350) | Silicone intubation (n = 3613) | Balloon dilation (n = 2056) | |
| Age, mean (SD), y | 1.36 (0.69) | 0.92 (0.59) | 1.71 (0.79) | 1.67 (0.75) |
| Sexa | ||||
| Female | 5501 (49) | 1181 (50) | 1778 (49) | 1037 (50) |
| Male | 5814 (51) | 1163 (49) | 1831 (51) | 1015 (49) |
| Unknown | 23 (<1) | 6 (<1) | 4 (<1) | 4 (<1) |
| Laterality | ||||
| Unilateral | 7941 (70) | 1788 (76) | 2444 (68) | 1230 (60) |
| Bilateral | 3397 (30) | 562 (24) | 1169 (32) | 826 (40) |
| Operative eye | ||||
| Left | 5950 (52) | 1182 (50) | 1877 (52) | 1006 (49) |
| Right | 5388 (48) | 1168 (50) | 1736 (48) | 1050 (51) |
| Surgeon volumeb | ||||
| Low | 9116 (80) | 1641 (70) | 2884 (80) | 1438 (70) |
| High | 2001 (18) | 667 (28) | 602 (17) | 590 (29) |
| Unknown | 221 (2) | 42 (2) | 127 (4) | 28 (1) |
| Race and ethnicitya | ||||
| Hispanic | 924 (8) | 241 (10) | 395 (11) | 170 (8) |
| Non-Hispanic Black | 413 (4) | 67 (3) | 178 (5) | 130 (6) |
| Non-Hispanic White | 7337 (65) | 1333 (57) | 2103 (58) | 1089 (53) |
| Otherc | 187 (2) | 21 (1) | 75 (2) | 85 (4) |
| Unknown | 2477 (22) | 688 (29) | 862 (24) | 582 (28) |
| US census region | ||||
| South | 3957 (35) | 1074 (46) | 1348 (37) | 1186 (58) |
| Midwest | 3645 (32) | 775 (33) | 978 (27) | 439 (21) |
| Northeast | 1735 (15) | 151 (6) | 448 (12) | 139 (7) |
| West | 1864 (16) | 302 (13) | 753 (21) | 273 (13) |
| Unknown | 137 (1) | 48 (2) | 86 (2) | 19 (1) |
a
Sex, race, and ethnicity data were extracted from the electronic health records contributing to the Intelligent Research in Sight Registry.
b
High-volume surgeons were defined as those performing at least 20 nasolacrimal probing procedures per year.
c
Other race and ethnicity included Asian, Native American or Alaska Native, Native Hawaiian or Other Pacific Islander, and other (“other” reported in the registry).