Volume 10, Number 6—June 2004
Research
Sporadic Cryptosporidiosis, North Cumbria, England, 1996–2000
Stella Goh*, Mark Reacher†
, David P. Casemore‡, Neville Q. Verlander†, Rachel Chalmers§, Margaret Knowles¶, Joy Williams*, Keith Osborn#, and Sarah Richards**
, David P. Casemore‡, Neville Q. Verlander†, Rachel Chalmers§, Margaret Knowles¶, Joy Williams*, Keith Osborn#, and Sarah Richards**Table 4
Final multivariable model
| Variables | Cases | Controls | Adjusted OR | CI | p value | |
|---|---|---|---|---|---|---|
| Sex |
||||||
| M |
82 |
236 |
1.1 |
0.73 to 1.67 |
0.64 |
|
| F |
70 |
230 |
1 |
|||
| Age |
152 |
466 |
0.99/y |
0.97 to 1.01 |
0.29 |
|
| Water supply zones |
||||||
| Crummock North |
37 |
103 |
1 |
0.71 |
||
| Crummock South |
19 |
49 |
1.28 |
0.61 to 2.67 |
||
| Ennerdale North |
29 |
101 |
0.95 |
0.51 to 1.78 |
||
| Ennerdale South |
13 |
43 |
0.9 |
0.39 to 2.09 |
||
| Millom |
19 |
54 |
1.04 |
0.51 to 2.13 |
||
| Quarry Hill |
16 |
41 |
1.36 |
0.61 to 3.05 |
||
| Hausegill |
3 |
5 |
1.37 |
0.26 to 7.11 |
||
| Hayknott |
2 |
6 |
0.89 |
0.16 to 4.85 |
||
| Underscar |
1 |
3 |
1.83 |
0.16 to 20.37 |
||
| Fellside |
0 |
1 |
0.002 |
0 to ∞ |
||
| Mixed from >1 zone |
11 |
51 |
0.77 |
0.34 to 1.77 |
||
| Private water supplies |
2 |
9 |
0.004 |
0 to 203.4 |
||
| Usual daily volume of cold unboiled tap water drunkb |
1.40/pint |
1.14 to 1.71 |
0.001 |
|||
| Any short visit to a farm |
||||||
| Y |
40 |
57 |
2.02 |
1.04 to 3.9 |
0.04 |
|
| N |
107 |
391 |
1 |
|||
| Feed pet raw vegetables |
||||||
| Y |
13 |
20 |
2.11 |
0.98 to 4.56 |
0.06 |
|
| N |
139 |
446 |
1 |
|||
| Feed pet biscuits |
||||||
| Y |
21 |
39 |
1.77 |
0.94 to 3.33 |
0.08 |
|
| N |
131 |
427 |
1 |
|||
| Ate nonlocally produced cheese |
||||||
| Y |
113 |
322 |
1.49 |
0.91 to 2.43 |
0.1 |
|
| N |
34 |
139 |
1 |
|||
| Contact farms without cattle or sheep |
||||||
| Y |
15 |
19 |
1.96 |
0.79 to 4.88 |
0.15 |
|
| N |
125 |
417 |
1 |
|||
| Contact with a cattle farm |
||||||
| Y |
15 |
29 |
1.67 |
0.73 to 3.82 |
0.23 |
|
| N | 125 | 407 | 1 | |||
aOR, odds ratio; CI, confidence interval.
bAt home and away from home in the Allerdale/Copeland area.
