Volume 16, Number 10—October 2010
Research
Risk Factors for Pandemic (H1N1) 2009 Virus Seroconversion among Hospital Staff, Singapore
Mark I.C. Chen
, Vernon J.M. Lee, Ian G. Barr, Cui Lin, Rachelle Goh, Caroline Lee, Baldev Singh, Jessie Tan, Wei-Yen Lim, Alex R. Cook, Brenda Ang, Angela Chow, Boon Huan Tan, Jimmy Loh, Robert Shaw, Kee Seng Chia, Raymond T.P. Lin, and Yee Sin Leo
, Vernon J.M. Lee, Ian G. Barr, Cui Lin, Rachelle Goh, Caroline Lee, Baldev Singh, Jessie Tan, Wei-Yen Lim, Alex R. Cook, Brenda Ang, Angela Chow, Boon Huan Tan, Jimmy Loh, Robert Shaw, Kee Seng Chia, Raymond T.P. Lin, and Yee Sin LeoTable 3
Multivariate analysis of risk factors associated with seroconversion for pandemic (H1N1) 2009 in 531 healthcare workers, Singapore, 2009*
| Risk factor | Adjusted OR (95% CI) | p value |
|---|---|---|
| Occupational subgroup | ||
| Allied health | Referent | |
| Nurses | 4.5 (1.0–19.6) | 0.05 |
| Ancilllary and support | 1.5 (0.2–11.1) | 0.69 |
| Administration | 3.6 (0.3–42.8) | 0.31 |
| Doctors |
3.8 (0.5–28.7) |
0.19 |
| Pandemic (H1N1) 2009 isolation wards vs. all others | 4.5 (1.3–15.6) | 0.02 |
| Contact with colleague(s) who had pandemic (H1N1) 2009 vs. none | 2.5 (0.9–6.6) | 0.06 |
| Household size (per additional household member) | 1.2 (1.0–1.4) | 0.06 |
| HI titer in baseline sample (per unit of increase)† | 0.5 (0.3–1.0) | 0.05 |
*OR, odds ratio; CI, confidence interval; HI, hemagglutination inhibition.
†For every unit increase in baseline (sample A) titer, where the integer values of 0–8 denote titers <0, 10, 20, 40, 80, 160, 320, 640, and >1,280, respectively.
