Table 1.
Characteristics of study participants in the Multiethnic Cohort
| Total N = 144,409 | GBD cases N = 13,437 | |||
|---|---|---|---|---|
| N | % | N | % | |
| Age at GBD occurrence, years | ||||
| Mean (range) | 73.5 (45.3–94.8) | |||
| Age at cohort entry, years | ||||
| < 50 | 19,307 | 13.4 | 758 | 5.6 |
| 50–54 | 22,658 | 15.7 | 1483 | 11.0 |
| 55–59 | 25,808 | 17.9 | 2542 | 18.9 |
| 60–64 | 26,559 | 18.4 | 2992 | 22.3 |
| 65–69 | 25,739 | 17.8 | 3053 | 22.7 |
| ≥ 70 | 24,338 | 16.9 | 2609 | 19.4 |
| Gender | ||||
| Men | 64,901 | 44.9 | 5658 | 42.1 |
| Women | 79,508 | 55.1 | 7779 | 57.9 |
| Race/ethnicity | ||||
| White | 32,103 | 22.2 | 2600 | 19.4 |
| African American | 30,209 | 20.9 | 2469 | 18.4 |
| Native Hawaiian | 6942 | 4.8 | 511 | 3.8 |
| Japanese American | 35,987 | 24.9 | 3133 | 23.3 |
| Latino – US born | 20,405 | 14.1 | 2398 | 17.9 |
| Latino – Mexico/South America born | 18,763 | 13.0 | 2326 | 17.3 |
| Area | ||||
| Hawaii | 51,579 | 35.7 | 4100 | 30.5 |
| California | 92,830 | 64.3 | 9337 | 69.5 |
| Type | ||||
| Gallstones only | 5395 | 40.2 | ||
| Cholecystitis only | 927 | 6.9 | ||
| Cholecystectomy only | 123 | 0.9 | ||
| Gallstones and Cholecystitis | 507 | 3.8 | ||
| Gallstones and Cholecystectomy | 3882 | 28.9 | ||
| Cholecystitis and Cholecystectomy | 505 | 3.8 | ||
| Gallstones, Cholecystitis, and Cholecystectomy | 2098 | 15.6 | ||
| Year of diagnosisa, b | ||||
| 1993–1997 | 1352 | 10.1 | ||
| 1998–2002 | 3362 | 25.0 | ||
| 2003–2007 | 4243 | 31.6 | ||
| 2008–2012 | 4480 | 33.3 | ||
aGallbladder disease included gallstone (574.XX), cholecystitis (575.XX), and cholecystectomy (procedure codes 51.2X and CPT codes 47,480, 47,490, 47,562 47,563, 47,564, 47,600, 47,605, 47,610, 47,612, 47,620, 56,340, 56,341, 56,342), whichever came first
bCases diagnosed before 1999 were identified from CHDD; between 1999 and 2012 were from both CHDD and Medicare