Characteristic | H. pylori | T. gondii | Hepatitis B virus | ||||||
---|---|---|---|---|---|---|---|---|---|
N | Positive (%)a | P b | N | Positive (%)a | P b | N | Positive (%)a | P b | |
Total | 5994 | 23.1 | Â | 18,425 | 11.0 | Â | 17,389 | 4.9 | Â |
NHANES cycle years | |||||||||
 1999–2000 | 5994 | 23.1 | – | 4084 | 13.5 | 0.0001 | 2926 | 5.0 | 0.8283 |
 2001–2002 | – | – |  | 4669 | 8.0 |  | 2955 | 4.5 |  |
 2003–2004 | – | – |  | 4089 | 9.3 |  | 2420 | 5.7 |  |
 2005–2006 | – | – |  | – | – |  | 2157 | 5.3 |  |
 2007–2008 | – | – |  | – | – |  | 2507 | 4.3 |  |
 2009–2010 | – | – |  | 5583 | 12.8 |  | 2466 | 5.0 |  |
 2011–2012 | – | – |  | – |  |  | 1958 | 4.9 |  |
Age (years) | |||||||||
  ≤ 13 | 1721 | 7.2 | <0.0001 | 5127 | 3.5 | <0.0001 | 613 | 0.4 | <0.0001 |
 14–40 | 2307 | 20.2 |  | 9252 | 10.5 |  | 4788 | 2.9 |  |
  ≥ 41 | 1966 | 33.4 |  | 4046 | 16.2 |  | 11,988 | 5.9 |  |
Gender | |||||||||
 Male | 2785 | 22.7 | 0.5279 | 8529 | 11.5 | 0.1633 | 8171 | 5.5 | 0.0185 |
 Female | 3209 | 23.5 |  | 9896 | 10.5 |  | 9218 | 4.5 |  |
Race | |||||||||
 Non-Hispanic White | 1912 | 14.6 | <0.0001 | 6320 | 9.0 | <0.0001 | 8365 | 2.6 | <0.0001 |
 Non-Hispanic Black | 1300 | 37.2 |  | 4313 | 11.7 |  | 3124 | 13.4 |  |
 Mexican American | 2586 | 45.2 |  | 6967 | 17.2 |  | 5083 | 4.3 |  |
 Other | 196 | 31.2 |  | 825 | 12.4 |  | 817 | 27.4 |  |
Family income | |||||||||
  ≥ $20,000 | 2991 | 18.3 | <0.0001 | 10,997 | 9.6 | <0.0001 | 10,661 | 4.0 | <0.0001 |
  < $20,000 | 2650 | 31.5 |  | 6725 | 14.3 |  | 6027 | 7.4 |  |
Country of birth origin | |||||||||
 United States | 4675 | 17.6 | <0.0001c | 14,417 | 7.7 | <0.0001 | 12,919 | 3.2 | <0.0001 |
 Other | 1314 | 53.4 |  | 4002 | 27.3 |  | 4459 | 14.0 |  |
General health condition | |||||||||
 Excellent/very good | 3190 | 17.2 | <0.0001 | 10,634 | 8.2 | <0.0001 | 7622 | 3.8 | <0.0001 |
 Good | 1855 | 28.0 |  | 5452 | 13.7 |  | 5829 | 5.6 |  |
 Fair/poor | 943 | 42.0 |  | 2330 | 20.9 |  | 3925 | 7.5 |  |
Source of tap water | |||||||||
 Municipal | 5306 | 22.9 | 0.9746 | 16,294 | 10.9 | 0.9501 | 13,218 | 5.4 | <0.0001 |
 Public/private well | 589 | 23.0 |  | 1768 | 11.0 |  | 1962 | 2.6 |  |
Crowded housingd | |||||||||
  ≤ 1 person/room | 4109 | 20.9 | <0.0001 | 12,739 | 10.1 | <0.0001 | 12,872 | 4.8 | 0.0091 |
  > 1 person/room | 1806 | 34.2 |  | 5490 | 15.7 |  | 2401 | 6.5 |  |
Injected drug user | |||||||||
 No/unknown | – | – | – | 18,377 | 8.4 | 0.5850 | 17,294 | 4.8 | <0.0001 |
 Yes | – | – |  | 48 | 11.0 |  | 95 | 18.5 |  |