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 3
Baseline characteristics of study population
| Characteristics |
Cases (%) 152 (100) |
Controls (%) 466 (100) |
p value |
|---|---|---|---|
| Sex |
|||
| M |
82 (53.9) |
236 (50.6) |
0.539 |
| F |
70 (46.1) |
230 (49.4) |
|
| Age, y |
|||
| 0–5 |
86 (56.6) |
273 (58.6) |
0.904 |
| 6–15 |
47 (30.9) |
136 (29.2) |
|
| 16+ |
19 (12.5) |
57 (12.2) |
|
| Local government district |
|||
| Allerdale |
83 (54.6) |
248 (53.2) |
0.838 |
| Copeland |
69 (45.4) |
218 (46.8) |
|
| Source of water/zone |
|||
| Crummock Lake/Crummock North |
37 (24.3) |
103 (22.1) |
0.941 |
| Crummock Lake/Crummock South |
19 (12.5) |
49 (10.5) |
|
| Ennerdale Lake/Ennerdale North |
29 (19.1) |
101 (21.7) |
|
| Ennerdale Lake/Ennerdale South |
13 (8.6) |
43 (9.2) |
|
| Millom/Millom |
19 (12.5) |
54 (11.6) |
|
| Quarry Hill/Quarry Hill |
16 (10.5) |
41 (8.8) |
|
| Hausegill/Hausegill |
3 (2.0) |
5 (1.1) |
|
| Hayknott/Hayknott |
2 (1.3) |
6 (1.3) |
|
| Underscar/Underscar |
1 (0.7) |
3 (0.6) |
|
| Fellside/Fellside |
0 |
1 (0.2) |
|
| Multiple sources/Mixed from >1 zone |
11 (7.2) |
51 (10.9) |
|
| Different private water supplies |
2 (1.3) |
9 (1.9) |
|
| Disruption of main supply in week before illness/outbreak? |
|||
| Y |
8 (5.3) |
14 (3.0) |
0.294 |
| N |
143 (94.1) |
448 (96.1) |
|
| Not recorded |
1 (0.7) |
4 (0.9) |
|
| Water discolored in the week before illness or outbreak? |
|||
| Y |
14 (9.2) |
33 (7.1) |
0.398 |
| N |
130 (85.5) |
431 (92.5) |
|
| Not recorded |
8 (5.3) |
2 (0.4) |
|
| Away from home in the 2 weeks before illness or outbreak? |
|||
| Y |
49 (32.2) |
163 (35.0) |
0.603 |
| N |
103 (67.8) |
303 (65.0) |
|
| Sewage services to home |
|||
| Mains |
130 (85.5) |
411 (88.2) |
|
| Septic tank |
21 (13.8) |
51 (10.9) |
|
| Chemical toilet |
1 (0.7) |
0 |
|
| Not recorded | 0 | 4 (0.9) |
