Volume 16, Number 12—December 2010
Historical Review
Mortality Risk Factors for Pandemic Influenza on New Zealand Troop Ship, 1918
Table 2
Multivariate analyses of risk for death during pandemic influenza outbreak onboard His Majesty’s New Zealand Transport Tahiti, 1918*
aOR (95% CI) | p value | aOR (95% CI) | p value | ||
---|---|---|---|---|---|
Demographic and sociodemographic | |||||
Age, continuous | 1.03 (1.00–1.06) | 0.071 | 1.04 (1.00–1.07) | 0.025 | |
Military rank, officer plus NCO vs. all other ranks§ | 0.51 (0.24–1.12) | 0.093 | 0.49 (0.23–1.08) | 0.077 | |
Occupational class based on prewar occupation, groups 7–9 vs. groups 1–6¶ | 0.72 (0.44–1.18) | 0.196 | 0.83 (0.50–1.38) | 0.468 | |
Rurality score, continuous |
0.97 (0.87–1.08) |
0.558 |
1.00 (0.90–1.12) |
0.943 |
|
Other | |||||
Military unit, 40th Reinforcements New Zealand Field Artillery vs all other units combined | 3.04 (1.59–5.82) | 0.001 |
*CI, confidence interval; aOR, adjusted odds ratio for death during the outbreak; NCO, noncommissioned officer.
†Hosmer-Lemeshow χ2 8.47, degrees of freedom 8, p = 0.389.
‡Hosmer-Lemeshow χ2 13.06, degrees of freedom 8, p = 0.110.
§Healthcare workers were included in other ranks.
¶Groups 1–6 indicate higher status occupations.