Volume 10, Number 7—July 2004
Research
Sporadic Cryptosporidiosis Case-Control Study with Genotyping
Paul R. Hunter*
, Sara Hughes†, Sarah Woodhouse†, Qutub Syed†, Neville Q. Verlander‡, Rachel M. Chalmers§, Kenton Morgan¶, Gordon Nichols†, Nick Beeching#, and Keith Osborn**
, Sara Hughes†, Sarah Woodhouse†, Qutub Syed†, Neville Q. Verlander‡, Rachel M. Chalmers§, Kenton Morgan¶, Gordon Nichols†, Nick Beeching#, and Keith Osborn**Table 4
Final multivariable model for Cryptosporidium parvum infectiona,b
| Variables | Adjusted OR | 95% CI | p value |
|---|---|---|---|
| Health authority |
|||
| A | 1 | < 0.001 | |
| B | 0.296 | 0.039–2.249 | |
| C | n.e. | n.e. | |
| D | 0.0001 | 0–∞ | |
| E | 0.0002 | 0–∞ | |
| F | 0.118 | 0.009–1.552 | |
| G | 0.0006 | 0–∞ | |
| H | 0.745 | 0.050–11.17 | |
| I | n.e. | n.e. | |
| J | 0.155 | 0.017–1.367 | |
| K | 0.00005 | 0–∞ | |
| L | 0.0002 | 0–∞ | |
| M | 0.981 | 0.136–7.082 | |
| N | 2.390 | 0.308–18.56 | |
| O | 0.0002 | 0–∞ | |
| P | 0.425 | 0.028–6.360 | |
| Q | n.e. | n.e. | |
| R | 1.239 | 0.186–8.260 | |
| S | 0.0001 | 0–∞ | |
| T | 0.643 | 0.043–9.545 | |
| U |
2.260 |
0.398–12.83 |
|
| Age |
0.993 |
0.972–1.015 |
0.530 |
| Touch or handle any farm animals |
|||
| Y | 2.653 | 1.113–6.323 | 0.028 |
| N |
1.000 |
||
| Eat tomatoes |
|||
| Y | 0.317 | 0.140–0.719 | 0.005 |
| N |
1.000 |
||
| Eat raw vegetables |
|||
| Y | 0.222 | 0.086–0.572 | 0.001 |
| N | 1.000 |
aEstimated from 392 observations (55 case-patients and 337 controls).
bOR, odds ratio; CI, confidence interval; n.e., not estimable.
