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Table 1 Hospital days and body weight of the subjects with and without HAI in univariate analysis, continuous variables, aged 60+, in Beijing, China

From: Risk factors of health care–associated infection in elderly patients: a retrospective cohort study performed at a tertiary hospital in China

  Control group
N = 58752
HAI group
N = 1580
t P
M ± s.d M ± s.d
Total hospital days (days) 9.16 ± 5.84 21.81 ± 10.45 47.93 < 0.001
Hospital days before HAI (days) 9.16 ± 5.84 10.31 ± 6.95 6.37 < 0.001
Body weight (km) 66.92 ± 11.69 64.46 ± 11.59 6.21 < 0.001