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Table 4 Association between season and outcome

From: Light and the outcome of the critically ill: an observational cohort study

Exposure

Odds ratioa

95% CI

P value

Seasonsa

   

   Spring

Referent

  

   Summer

1.01

0.82-1.25

0.90

   Fall

1.08

0.88-1.33

0.46

   Winter

1.08

0.87-1.33

0.49

Seasonsb

   

   Spring

Referent

  

   Summer

0.93

0.74-1.16

0.52

   Fall

1.35

1.01-1.81

0.04

   Winter

1.46

1.03-2.08

0.03

  1. aAdjusted for Acute Physiology and Chronic Health Evaluation (APACHE) III, age, sex, race, admission diagnosis, and intensive care unit (ICU) location. bAdjusted for APACHE III, age, sex, race, admission diagnosis, ICU location, and cumulative 28-day photoperiod. CI, confidence interval.
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Critical Care

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