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Table 2 Multivariate logistic regression analysis of 30-day mortality for the entire study cohort and age groupsa

From: Gender differences in outcome and use of resources do exist in Swedish intensive care, but to no advantage for women of premenopausal age

 

All admissions

Age ≤45 yr

Age >45 yr

 

(n =127,254)

(n =31,939)

(n =95,315)

Male sex

Reference

Reference

Reference

Female sex

1.03 (0.98 to 1.08)

0.97 (0.80 to 1.18)

1.03 (0.98 to 1.07)

Comorbidityb

1.07 (1.06 to 1.07)

1.14 (1.11 to 1.18)

1.06 (1.06 to 1.07)

Age, per yr

1.06 (1.05 to 1.06)

1.03 (1.02 to 1.04)

1.06 (1.06 to 1.06)

Days in hospital prior to ICUc

1.23 (1.20 to 1.26)

1.25 (1.13 to 1.39)

1.22 (1.19 to 1.26)

Location prior to ICU admission

   

  Emergency room

Reference

Reference

Reference

  Other ICU

1.15 (1.04 to 1.28)

1.45 (0.97 to 2.15)

1.14 (1.02 to 1.27)

  Operating theatre

0.81 (0.72 to 0.92)

0.99 (0.56 to 1.72)

0.80 (0.71 to 0.91)

  Recovery room

1.18 (0.87 to 1.60)

0.82 (0.06 to 11.92)

1.17 (0.86 to 1.59)

  High-dependency unit

0.93 (0.77 to 1.11)

0.60 (0.19 to 1.84)

0.94 (0.78 to 1.13)

  Any other location

1.18 (1.11 to 1.25)

2.00 (1.54 to 2.62)

1.14 (1.02 to 1.27)

Therapy prior to ICU admissiond

1.22 (1.14 to 1.32)

1.85 (1.38 to 2.50)

1.19 (1.10 to 1.28)

Reasonss for ICU admission, per pointb

1.07 (1.07 to 1.08)

1.10 (1.07 to 1.12)

1.07 (1.07 to 1.08)

Planned admission

0.91 (0.83 to 1.00)

1.02 (0.66 to 1.57)

0.91 (0.82 to 1.00)

Surgical status

   

  Emergency surgery

Reference

Reference

Reference

  Elective surgery

0.49 (0.43 to 0.55)

0.57 (0.27 to 1.21)

0.49 (0.43 to 0.55)

  No surgery

1.35 (1.24 to 1.46)

2.27 (1.52 to 3.41)

1.32 (1.21 to 1.43)

Presence of nosocomial infection

1.07 (0.96 to 1.18)

0.79 (0.50 to 1.24)

1.08 (0.97 to 1.20)

Presence of lower-airway infection

0.75 (0.70 to 0.79)

0.79 (0.60 to 1.03)

0.75 (0.70 to 0.80)

Physiologic derangement, per pointb

1.10 (1.09 to 1.10)

1.13 (1.12 to 1.14)

1.09 (1.09 to 1.10)

Tertiary care hospital

Reference

Reference

Reference

District general hospital

1.08 (1.02 to 1.14)

0.80 (0.64 to 0.99)

1.10 (1.04 to 1.17)

Local hospital

1.00 (0.93 to 1.07)

0.62 (0.46 to 0.85)

1.02 (0.96 to 1.10)

Model fit

   

  c-statistic

0.85

0.91

0.81

R 2

0.28

0.34

0.22

  1. aICU, Intensive care unit. Odds ratios (99% confidence intervals) are presented for all variables in the main 30-day mortality logistic regression model; c-statistics and R 2-values are presented for assessment of model fit. bScored as in the Simplified Acute Physiology Score III (SAPS III) model. cTransformed with use of ln(x). dDefined as in the SAPS III model.
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