Table 2.
Cohort Characteristics and Cholecystectomy Rates Based on Characteristics
| n (% of overall cohort) | Undergoing cholecystectomy, n (%) | p Value | |
|---|---|---|---|
| Overall cohort | 161,568 | 35,967 (22.3%) | ~ |
| Age, y, mean (SD) | 76.5 (7.3) | 74.1 (6.2) | <0.0001 |
| Age group, y | <0.0001 | ||
| 66-69 | 33,522 (20.8%) | 10,247 (30.6%) | |
| 70-74 | 38,966 (24.1%) | 10,521 (27.0%) | |
| 75-79 | 36,076 (22.3%) | 7,983 (22.1%) | |
| 80+ | 53,004 (32.8%) | 7,216 (13.6%) | |
| Sex | <0.0001 | ||
| Female | 96,809 (59.9%) | 23,261 (24.0%) | |
| Male | 64,759 (40.1%) | 12,706 (19.6%) | |
| Race | <0.0001 | ||
| White | 135,711 (84.0%) | 32,037 (23.6%) | |
| Black | 11,294 (7.0%) | 1,405 (12.4%) | |
| Hispanic | 11,316 (7.0%) | 1,998 (17.7%) | |
| Other | 3,247 (2.0%) | 527 (16.2%) | |
| Elixhauser Comorbidity Index | <0.0001 | ||
| 0 | 25,633 (15.9%) | 8,461 (33.0%) | |
| 1 | 31,991 (19.8%) | 9,919 (31.0%) | |
| 2 | 29,543 (18.3%) | 7,552 (25.6%) | |
| >=3 | 74,401 (46.1%) | 10,035 (13.5%) | |
| Initial diagnosis | <0.0001 | ||
| Biliary colic | 109,043 (67.5%) | 20,271 (18.6%) | |
| Acute cholecystitis | 40,980 (25.4%) | 13,534 (33.0%) | |
| Common bile duct stones | 7,143 (4.4%) | 1,259 (17.6%) | |
| Gallstone pancreatitis | 4,402 (2.7%) | 903 (20.5%) | |
| Location of initial visit | <0.0001 | ||
| Physician visit | 145,650 (90.2%) | 32,659 (22.4%) | |
| Emergency room visit | 15,918 (9.8%) | 3,308 (20.8%) |