Table 5 Univariate hazard ratios for the unmatched and matched cohorts.

From: Outcomes of septic shock from urinary and non-urinary sources in nonagenarians and centenarians admitted to intensive care units

Variable

Unmatched univariate hazard ratio

Matched univariate hazard ratio

HR (95% CI)

p value

HR (95% CI)

p value

Non-UTI versus UTI Septic Shock (≤ 300 days)

1.563 (1.280–1.901)

 < 0.001*

1.348 (1.068–1.700)

0.012

Non-UTI versus UTI Septic Shock (> 300 days)

0.943 (0.683–1.302)

0.721

0.899 (0.609–1.327)

0.592

Age (per year)

1.042 (1.036–1.048)

 < 0.001*

0.982 (0.930–1.035)

0.496

Sex (male vs. female)

0.243 (0.061–0.970)

0.045

0.900 (0.734–1.103)

0.308

SOFA Score (per point)

1.156 (1.150–1.162)

 < 0.001*

0.992 (0.952–1.034)

0.695

APACHE III Score (per point)

1.026 (1.026–1.027)

 < 0.001*

1.027 (1.019–1.034)

 < 0.001*

Elective Admission (yes vs. no)

0.516 (0.499–0.533)

 < 0.001*

0.699 (0.253–1.930)

0.486

  1. Hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated using univariate Cox proportional hazards models. For time-stratified analyses, the follow-up period was divided at 30 days post-admission, with hazard estimates reported separately for ≤ 300 days and > 300 days. Matching was performed using 1:1 nearest-neighbour propensity score matching without replacement and a caliper of 0.1. Variables included in the matching algorithm were age, sex, APACHE III score, SOFA score, and elective admission status. UTI = urinary tract infection; Non-UTI = non-urinary tract infection. Asterisk () indicates statistical significance at p < 0.05*.
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