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Table 3 Logistic regression backward likelihood ratio (LR) model for frequent emergency department (ED ≥ 4) use among respondents who have had a first ED visit

From: Health related quality of life and emergency department visits in adults of age ≥ 66 years: a prospective cohort study

Variables

Total (n = 280)

 

66-80 years (n = 161)

80+ years (n = 119)

OR (95% CI)

p-value

OR (95% CI)

p-value

OR (95% CI)

p-value

Model step onea

 Poor Physical HRQoL

1.38 (0.73-2.60)

0.317

1.04 (0.37-2.86)

0.938

1.23 (0.50-3.00)

0.649

 Poor Mental HRQoL

1.64 (0.89-3.03)

0.108

1.42 (0.56-3.56)

0.450

1.70 (0.69-4.17)

0.242

 Age (80+)

0.72 (0.38-1.34)

0.308

-

-

-

-

 Male

1.77 (1.01-3.11)

0.045

2.10 (0.97-4.56)

0.059

1.67 (0.68-4.13)

0.260

 Institutionalised housing

1.34 (0.39-4.60)

0.635

10.36 (0.83-128.32)

0.069

0.76 (0.13-4.29)

0.759

 Living alone

1.47 (0.81-2.66)

0.199

1.22 (0.55-2.74)

0.615

1.76 (0.64-4.83)

0.273

 Primary education

1.32 (0.75-2.29)

0.326

2.33 (1.10-4.94)

0.026

0.68 (0.28-1.62)

0.389

 Dependent in ADL (≥1)

0.88 (0.36-2.14)

0.784

3.53 (0.69-17.93)

0.128

0.46 (0.14-1.53)

0.211

 Dependent in IADL (≥1)

0.98 (0.53-1.79)

0.952

0.81 (0.37-1.74)

0.594

1.30 (0.44-3.89)

0.628

 Number of diseases/illnesses

1.00 (0.81-1.24)

0.935

0.92 (0.70-1.22)

0.589

1.05 (0.72-1.53)

0.800

Final modelb

 Poor Mental HRQoL

1.88 (1.07-3.32)

0.028

-

-

1.69 (0.74-3.83)

0.205

 Male

1.56 (0.92-2.65)

0.099

1.92 (0.92-4.04)

0.082

-

-

 Institutionalised housing

-

-

11.69 (1.04-131.62)

0.046*

-

-

 Primary education

-

-

2.32 (1.10-4.88)

0.025*

-

-

 Dependence in ADL

-

-

3.68 (1.01-13.29)

0.047*

-

-

  1. Abbreviations: HRQoL Health related quality of life, ADL activity of daily living, IADL instrumental activity of daily living, OR odds ratio, CI confidence interval. In the analysis, good physical and mental health related quality of life, female, living at home, living together, education higher than primary, independence in ADL and IADL, and having no disease were used as reference categories. The p-value < 0.05 was used to test significance
  2. aLogistic regression backward LR at step one including all variables
  3. bLogistic regression backward LR at final step
  4. In total sample, LR at step one was 323.63, p = 0.04 and at final step was 328.10, p = 0.024. In 66–80 age group, LR at step one was 175.52, p = 0.101 and at final step was 177.05, p = 0.092. In 80+ age group, LR at step one was 135.97, p = 0.052 and at final step was 140.79, p = 0.013
  5. *Significant p-value based on 1000 Bootstrap samples with bias-corrected and accelerated confidence interval type