Volume 10, Number 2—February 2004
THEME ISSUE
2004 SARS Edition
SARS Transmission
Secondary Household Transmission of SARS, Singapore
Figure

Figure. Survival analysis for secondary household transmission (Cox regression model). Household contacts were more likely to get SARS if the index was older or a nonhealthcare worker. Hazard ratios of risk factors analyzed are tabulated in Table 2. The -2log likelihood for this analysis was 253.77. HH, household; HCW, healthcare worker; NHCW, nonhealthcare worker.