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Table 1 Characteristics of study participants in the Multiethnic Cohort

From: Sex and ethnic/racial-specific risk factors for gallbladder disease

  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
  1. 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
  2. bCases diagnosed before 1999 were identified from CHDD; between 1999 and 2012 were from both CHDD and Medicare