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Table 3 Subgroup analysis based on the general characteristics of participants: total number of outpatients visit

From: Effect of on-site first aid for industrial injuries on healthcare utilization after medical treatment: a 4-year retrospective longitudinal study

Variables

Total outpatients visit per year

No first aid

On-site first aid

aRR

aRR

95% CI

Year

     
 

2018

1.000

0.900

0.777

-

1.043

 

2019

1.000

0.827

0.682

-

1.002

 

2020

1.000

0.844

0.663

-

1.073

 

2021

1.000

0.717*

0.597

-

0.861

Sex

     
 

Male

1.000

0.822*

0.713

-

0.948

 

Female

1.000

0.904

0.718

-

1.139

Age

     
 

Below 30s

1.000

1.103

0.818

-

1.488

 

40s

1.000

0.977

0.721

-

1.326

 

50s

1.000

0.768*

0.636

-

0.926

 

Above 60s

1.000

0.799*

0.654

-

0.976

Education level

     
 

High school graduation or lower

1.000

0.825*

0.715

-

0.951

 

University or higher

1.000

0.865

0.672

-

1.114

Economic activity

     
 

Employed

1.000

0.811*

0.685

-

0.960

 

Unemployed

1.000

0.916

0.685

 

1.226

 

Economically inactive population

1.000

0.891

0.762

-

1.040

Economic status

     
 

Lowest quintile

1.000

0.904

0.663

-

1.234

 

 s quintile

1.000

0.778*

0.642

-

0.942

 

Middle quintile

1.000

0.897

0.778

-

1.035

 

Fourth quintile

1.000

0.721*

0.571

-

0.909

 

Top quintile

1.000

0.747

0.536

 

1.041

Area of residence

     
 

Metropolitan

1.000

0.936

0.797

-

1.099

 

Province(rural)

1.000

0.791*

0.659

-

0.948

Past medical history before accident

     
 

Without chronic disease

1.000

0.868

0.740

-

1.017

 

With chronic disease

1.000

0.842

0.696

-

1.018

Type of injury

     
 

Fracture

1.000

0.863

0.729

-

1.022

 

Sprained

1.000

0.829

0.552

-

1.246

 

Back pain/Musculoskeletal disease

1.000

0.396

0.138

-

1.137

 

Amputation

1.000

0.947

0.718

-

1.250

 

Cuts

1.000

0.779

0.301

-

2.013

 

Bruising/Concussion

1.000

0.401

0.155

-

1.034

 

Rupture/Laceration

1.000

0.749*

0.582

-

0.965

 

Burns

1.000

1.133

0.747

-

1.718

 

Others

1.000

0.903

0.638

-

1.279

Disability grade

     
 

Grade 1 ~ 3

1.000

 N.Aa

   
 

Grade 4 ~ 7

1.000

0.946

0.715

-

1.250

 

Grade 8 ~ 9

1.000

1.129

0.830

-

1.536

 

Grade 10 ~ 12

1.000

0.936

0.776

-

1.129

 

Grade 13 ~ 14

1.000

0.849

0.702

-

1.027

 

No disability

1.000

0.787*

0.643

-

0.962

Period of medical treatment

     
 

Less than 3 months

1.000

0.775*

0.614

-

0.979

 

3 ~ 12 months

1.000

0.844*

0.719

-

0.990

 

More than 1 year

1.000

1.311

0.992

-

1.731

  1. a Due to insufficient number of samples
  2. * Statistically significant; aRR = adjusted Relative Risk; CI = Confidence Interval; N.A = Not Applicable