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. Author manuscript; available in PMC: 2015 Jun 10.
Published in final edited form as: Am J Gastroenterol. 2008 Jul 30;103(9):2231–2238. doi: 10.1111/j.1572-0241.2008.02022.x

Table 1.

Sociodemographic Characteristics of the Study Sample by Race/Ethnicity, Age, Education, Income, and Gender (N [weighted %])

Sociodemographic
Characteristics
Men Women


White
(N = 3,433)
Black
(N = 1,309)
Mexican American
(N = 1,520)
White
(N = 3,296)
Black
(N = 1,361)
Mexican American
(N = 1,441)
Age
  20–44 1,255 (48) 619 (58) 742 (74) 1,136 (43) 610 (54) 633 (66)
  45–60 749 (28) 298 (26) 270 (18) 734 (28) 320 (27) 280 (21)
  61+ 1,429 (23) 392 (16) 508 (9) 1,426 (29) 431 (20) 528 (13)
Education
  Less than high school 627 (14) 498 (34) 973 (56) 582 (15) 492 (33) 885 (53)
  High-school diploma 937 (28) 304 (25) 249 (21) 977 (29) 320 (24) 228 (20)
  More than high school 1,869 (59) 507 (41) 298 (23) 1,737 (57) 549 (43) 328 (28)
Income (PIR)*
  0–1.0 342 (8) 280 (22) 419 (25) 389 (11) 374 (28) 445 (31)
  >1.0–3.0 1,278 (32) 573 (43) 773 (53) 1,335 (36) 618 (44) 683 (46)
  >3.0 1,813 (60) 456 (36) 328 (22) 1,572 (53) 369 (28) 313 (23)
*

The Poverty Income Ratio (PIR) is the ratio of income to the family’s appropriate poverty level (U.S. Census Bureau, 2003a). PIR values less than 1.0 are below the official poverty threshold. PIR values of 1.0 or greater indicate an income above the poverty threshold.