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Table 3 Univariate and multivariate regression for the total number of days spent in hospital among those patients with at least one hospital admission

From: Hospital admission rates and related outcomes among adult Aboriginal australians with bronchiectasis – a ten-year retrospective cohort study

Clinical parameters

Univariate model

RW p

Multivariate model

RW p

Age

-0.25 (-0.58, 0.07)

0.974

-0.44 (-0.71, -0.17)

0.497

Female

-3 (-9.48, 3.48)

1.000

-2.72 (-9.03, 3.58)

0.993

Urban

-1 (-13.45, 11.45)

1.000

0.91 (-10.75, 12.58)

1.000

BMI (n = 152)

-0.64 (-1.58, 0.31)

1.000

  

Former smoker

-8 (-26.05, 10.05)

1.000

  

Current Smoker

-3 (-21.05, 15.05)

  

FVC (10% predicted) (n = 152)

6 (2.88, 9.12)

0.828

  

FEV1 (10% predicted) (n = 152)

6.33 (3.43, 9.23)

0.729

  

FEV1/FVC (n = 152)

0.11 (-0.26, 0.47)

1.000

  

COPD

19 (10.13, 27.87)

0.689

12.88 (2.28, 23.48)

0.676

Asthma

13 (6.18, 19.82)

0.517

  

ILD

6 (-34.35, 46.35)

1.000

  

Lung cancer

0 (-16.03, 16.03)

1.000

  

Hypertension

4 (-3.27, 11.27)

0.934

10.13 (3.32, 16.93)

0.563

Type 2 diabetes

5 (-1.71, 11.71)

0.993

  

Chronic kidney disease

0 (-6.39, 6.39)

0.993

  

CAD

6 (-0.15, 12.15)

0.974

  

HF

23 (12.33, 33.67)

0.636

15.36 (4.4, 26.32)

0.583

RLL

5 (-1.75, 11.75)

0.993

  

RML

-7 (-13.43, -0.57)

0.974

-9.06 (-15.71, -2.41)

0.636

RUL

6 (-1.17, 13.17)

0.755

11.98 (4.77, 19.2)

0.483

LLL

2 (-5, 9)

1.000

  

Lingula

1 (-5.95, 7.95)

1.000

  

LUL

6 (-1.57, 13.57)

0.894

  

Bilateral

5 (-1.58, 11.58)

0.993

  

SABA

9 (2.25, 15.75)

0.848

  

SAMA

10 (-2.49, 22.49)

0.993

  

LABA

15 (8.41, 21.59)

0.623

9.44 (2.38, 16.49)

0.636

LAMA

15 (8.81, 21.19)

0.397

  

ICS

12 (5.97, 18.03)

0.682

  
  1. Multivariate model created via stepwise regression with forced inclusion of demographic variables (age, sex and residence location) and excluding smoking status, BMI and lung function parameters due to incomplete data, with exclusion from the model set at p > 0.01
  2. Abbreviations: BMI Body mass index, FVC Forced vital capacity, FEV1 Forced expiratory volume in one second, COPD Chronic obstructive pulmonary disease, ILD Interstitial lung disease, HF Heart failure, CAD Coronary artery disease, LLL Left lower lobe, RLL Right lower lobe, RML Right middle lobe, RUL Right upper lobe, LUL Left upper lobe, SABA Short acting beta agonists, SAMA Short acting muscarinic agents, LABA Long acting beta agonists, LAMA Long acting muscarinic agents, ICS Inhaled corticosteroids, RW-p Romano-Wolff p-value