Volume 6, Number 1—February 2000
Dispatch
Risk Factors for Carriage of Neisseria meningitidis during an Outbreak in Wales
Patricia E. Fitzpatrick*, Roland L. Salmon*
, Paul R. Hunter†, Richard J Roberts‡, and Stephen R. Palmer*
, Paul R. Hunter†, Richard J Roberts‡, and Stephen R. Palmer*Table 3
Risk factors for meningococcal carriage in a Welsh secondary school
| Exposeda |
Nonexposed |
Exposed |
Nonexposed |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Variable | Meningo- coccal carrier | Non- carrier | Meningo- coccal carrier | Non- carrier | Odds ratio (95% CI) | B15 P1.16 carrier | B15 P1.16 non- carrier | B15 P1.16 carrier | B15 P1.16 non- carrier | Odds ratio (95% CI) |
| Year 11a | 33 | 96 | 20 | 477 | 8.20b | 11 | 118 | 0 | 497 | Undefb |
| (4.34-15.56) | ||||||||||
| Same classes | 10 | 42 | 43 | 530 | 2.93b | 1 | 121 | 10 | 494 | 0.41 |
| as index casesc | (1.28-6.58) | (0.02-3.13) | ||||||||
| Smoker | 21 | 136 | 32 | 437 | 2.11b | 3 | 154 | 8 | 461 | 1.12 |
| (1.12-3.94) | (0.23-4.71) | |||||||||
| Other smoker | 26 | 202 | 27 | 371 | 1.77b | 4 | 224 | 7 | 391 | 1.00 |
| in household | (0.99-3.24) | (0.24-3.84) | ||||||||
| Student smoker and | 12 | 70 | 41 | 503 | 2.10b | 2 | 80 | 9 | 535 | 1.49 |
| other in household | (1.00-4.41) | (0.00-7.54) | ||||||||
| >2 smokers in | 9 | 37 | 44 | 535 | 2.96b | 1 | 45 | 10 | 567 | 1.26 |
| householdc | (1.24-6.89) | (0.00-12.81) | ||||||||
| Football teamc | 6 | 88 | 47 | 415 | 0.60 | 3 | 91 | 8 | 454 | 1.87 |
| (0.22-1.54) | (0.38-8.02) | |||||||||
| Rugby teamc | 3 | 29 | 50 | 466 | 0.96 | 1 | 31 | 10 | 506 | 1.63 |
| (0.22-3.51) | (0.00-13.27) | |||||||||
| Hockey teamc | 3 | 29 | 50 | 467 | 0.97 | 1 | 31 | 10 | 507 | 1.64 |
| (0.22-3.52) | (0.00-13.30) | |||||||||
| Netball teamc | 1 | 54 | 52 | 452 | 0.16 | 0 | 55 | 11 | 493 | 0.00 |
| (0.01-1.13) | (0.00-4.46) | |||||||||
| Any sport | 10 | 172 | 43 | 401 | 0.54 | 3 | 179 | 8 | 436 | 0.91 |
| (0.25-1.16) | (0.19-3.83) | |||||||||
| Regular youth | 21 | 180 | 32 | 341 | 1.24 | 3 | 198 | 8 | 365 | 0.69 |
| clubc | (0.67-2.31) | (0.14-2.93) | ||||||||
| Regular discob | 30 | 279 | 23 | 248 | 1.16 | 4 | 305 | 7 | 264 | 0.49 |
| (0.63-2.14) | (0.12-1.92) | |||||||||
| Attendance at | 23 | 111 | 29 | 461 | 3.29b,c | 8 | 126 | 3 | 487 | 10.31b |
| partyc | (1.75-6.18) | (2.42-50.34) | ||||||||
| Cubs/brownies/ | 1 | 42 | 52 | 531 | 0.24 | 0 | 43 | 11 | 572 | 0.00 |
| scouts/guides | (0.01-1.72) | 0.00-0.00 | ||||||||
| Life event | 18 | 146 | 35 | 427 | 1.50 | 2 | 162 | 9 | 453 | 0.62 |
| (0.79-2.86) | (0.00-3.15) | |||||||||
| Death in familyc | 4 | 56 | 49 | 516 | 0.75 | 0 | 60 | 11 | 554 | 0.00 |
| (0.22-2.30) | (0.00-4.58) | |||||||||
| Change of housec | 5 | 33 | 48 | 539 | 1.70 | 0 | 38 | 11 | 576 | 0.00 |
| (0.55-4.89) | (0.00-7.63) | |||||||||
| Received bad | 15 | 79 | 38 | 493 | 2.46* | 2 | 92 | 9 | 522 | 1.26 |
| newsc | (1.22-4.91) | (0.00-6.46) | ||||||||
| Travelc | 6 | 107 | 47 | 464 | 0.55 | 1 | 112 | 10 | 501 | 0.45 |
| (0.21-1.40) | (0.02-3.48) | |||||||||
aSame school year as index case.
bp < 0.05.
cData missing.
