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Table 2 Multilevel logistic regression, factors associated with readmission ≤31 daysa

From: Risk factors associated with 31-day unplanned readmission in 50,912 discharged patients after stroke in China

Factor

OR

95% CI

P-Value

Lower

Upper

Patient characteristics

Principal discharge diagnosis - I61 Haemorrhagic stroke

1

   

I63 Ischemic stroke

0.467

0.437

0.498

< 0.001

Sex – male

1

   

 female

0.995

0.950

1.042

0.842

Age (years) - 18-49

1

   

 50–59

0.820

0.749

0.898

< 0.001

 60–69

0.737

0.662

0.819

< 0.001

 70–79

0.725

0.650

0.808

< 0.001

 80 and above

0.879

0.784

0.985

0.027

Occupation - Manager and staff

1

   

 Manufacturing worker

0.962

0.846

1.094

0.556

 Farmer

1.090

0.959

1.238

0.187

 Self-employed

0.958

0.785

1.169

0.674

 Retiree

1.092

0.984

1.212

0.099

 Others

1.072

0.961

1.195

0.211

Marital status –Single / widow/ divorce/other

1

   

 Married

0.969

0.898

1.046

0.422

Medical expense payers - Self-paying medical service

1

   

 Urban employee basic medical insurance

0.504

0.467

0.544

< 0.001

 Urban resident basic medical insurance

0.514

0.466

0.567

< 0.001

 New rural cooperative medical scheme

0.643

0.578

0.716

< 0.001

 Medical financial assistance fund for the poor

0.309

0.225

0.424

< 0.001

 Commercial medical insurance

0.636

0.433

0.934

0.021

 Free medical service

0.865

0.735

1.017

0.079

 Other social insurance

0.447

0.345

0.581

< 0.001

Comorbidities

Hypertension - no

1

   

 yes

0.966

0.918

1.017

0.188

Diabetes - no

1

   

 yes

1.089

1.035

1.145

0.001

Health system and clinical processes

Rank of hospital -primary and secondary hospital

1

   

 tertiary hospital

1.168

0.845

1.614

0.348

Type of hospital - Western medicine (WM) hospital

1

   

 TCM hospital

1.194

0.778

1.833

0.417

 TCM-WM hospital

1.287

0.768

2.156

0.339

 Ethnic minority hospital

1.360

0.564

3.279

0.493

Admission route - Emergency

1

   

 Outpatient

0.994

0.929

1.064

0.860

 Others (such as Transferred from other hospitals)

1.140

0.945

1.374

0.170

Length of hospital stay (days) - 1-7

1

   

 8–14

0.444

0.411

0.478

< 0.001

 15–21

0.459

0.424

0.496

< 0.001

 22–28

0.516

0.470

0.566

< 0.001

 29 and above

0.092

0.082

0.103

< 0.001

Use of clinical pathways - no

1

   

 yes

1.174

1.108

1.243

< 0.001

Use TCM treatment - no

1

   

 yes

1.036

0.944

1.136

0.458

Type of discharge - Leaving or transferred with doctor’s advice

1

   

 Others*

1.485

1.272

1.733

< 0.001

  1. *Others include patients discharged without doctor’s advice and those deceased
  2. aRandom-effects variance:0.792; interclass correlation: 0.194; OR: odds ratio; CI: confidence interval