Volume 14, Number 5—May 2008
Risk Factors for Sporadic Shiga Toxin–producing Escherichia coli Infections in Children, Argentina1
|% Case-patients† (n = 58)||% Controls† (n = 116)||mOR||p value||% Case-patients† (n = 38)||% Controls† (n = 75)||mOR||p value|
|Eating at a social gathering||19||8||9.79||<0.01||21||7||2.82||NS|
|Drinking from a baby bottle left at room temperature for >2 h||75||76||1.32||NS||66||53||3.78||<0.05|
|Drinking formula (milk)‡||3||3||1.91||NS||11||1||12.70||<0.05|
|Meat-related dietary habits§|
|Eating breaded beef (milanesa) at restaurant||5||0||15.00¶||<0.05||3||1||2.02||NS|
|Eating a piece of beef outside home§||12||5||4.68||<0.05||13||1||7.56||<0.10|
|Eating undercooked beef at any place||29||10||3.69||<0.05||29||17||1.96||NS|
|Teething on undercooked beef at home||16||3||4.15||<0.10||8||1||12.78||<0.10|
|Consuming jugo de carne¶||16||4||3.24||<0.10||8||7||2.22||NS|
|Eating undercooked piece of beef||22||8||3.29||<0.10||16||11||1.25||NS|
|Eating salami at home||24||10||3.73||<0.05||11||8||1.28||NS|
|Eating beef soup‡||36||48||0.44||<0.10||45||40||1.31||NS|
|Exposure to animals or their environment|
|Living in or visiting a place with farm animals||18||5||11.83||<0.01||13||5||2.76||NS|
|Contact with farm animals at any place||14||5||6.08||<0.05||13||7||3.39||NS|
|Contact with horses||12||5||4.51||<0.05||13||4||6.78||NS|
|Contact with a child <5 y with diarrhea||20||5||6.29||NS||26||4||6.93||<0.05|
|Nonparental household income||58||42||2.06||<0.10||45||47||1.02||NS|
| Living in overcrowded condition‡
|Eating meat pie at home||17||23||0.77||NS||5||19||0.19||<0.10|
|Eating empanadas at home||16||37||0.17||<0.01||18||33||0.37||NS|
|Eating ground beef at home‡||69||82||0.21||<0.05||60||73||0.29||NS|
|Eating breaded beef (milanesa) at home||49||67||0.39||<0.05||45||56||0.77||NS|
|Buying beef <1 time/wk‡||76||93||0.24||<0.05||87||89||0.43||NS|
*mOR, matched odds ratio; NS, not significant (p>0.10).
†For STEC O157, the denominator (number of respondents) for case-patients varied from 56 to 58, except for contact with a child <5 y with diarrhea, in which the number was 51. The denominator for their controls varied from 112 to 116, except for this same factor, in which the number was 104. For non-O157 STEC, the denominator (number of respondents) varied from 37 to 38, except for contact with a child <5 y with diarrhea, in which the number was 31. The denominator for their controls varied from 73 to 75, except for this same factor, in which the number was 67.
‡All significant associations except these were also significant associations in the total dataset with 150 cases.
§The term “meat” includes ground beef.
¶Liquid squeezed from a tender, usually lightly cooked piece of beef, and spoon-fed.
1Part of the information in this article was presented at the 5th International Symposium and Workshop on Shiga Toxin (verocytotoxin)–Producing Escherichia coli Infections, June 2003, Edinburgh, Scotland, United Kingdom, Abstract 0-5, p.19.