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Table 5 Parameter estimation of the generalized estimation equation for the perception of a safe working environment

From: Effectiveness of a multidimensional intervention program in improving occupational musculoskeletal disorders among intensive care unit nurses: a cluster-controlled trial with follow-up at 3 and 6 months

Variable

Single-factor analysis

Multiple-factor analysis

ORa

Upper

Lower

p-value

ORa

Lower

Upper

p-value

Age

1.422

1.004

2.014

0.047

1.087

0.537

2.200

0.816

Sex

 Male

13.853

0.410

27.541

0.143

    

 Female

1

       

BMIb

  < 18.5

0.002

4.233

1.215

0.058

    

 18.5–23.9

0.009

2.869

2.634

0.104

    

 24.0–27.9

0.017

3.710

7.986

0.195

    

  ≥ 28

1

       

Marital Status

 Single

0.266

0.016

4.496

0.359

    

 Married

1

       

ICUc employment

 1–2 years

0.016

0.005

11.583

0.366

0.278

5.037

53.207

0.771

 3–5 years

0.784

0.001

0.320

0.011

0.013

1.352

11.950

0.211

 5–10 years

1.095

0.028

21.904

0.886

1.081

0.011

29.596

0.974

  > 10 years

1

   

1

   

Job title

 Nurse

0.032

0.001

1.203

0.063

    

 Senior nurse

0.998

0.040

25.162

0.998

    

 Supervisor nurse

1

       

Education

 Junior college

0.060

0.001

20.436

0.344

    

 Bachelor

1.036

0.027

39.181

0.985

    

 Master/Doctoral

1

       

Group

 Group = 0 (Control group)

    

1.637

1.063

40.371

0.024

 Group = 1 (Intervention group)

    

1

   

Time

 Time = 0 (Baseline)

    

14.667

0.276

49.842

0.185

 Time = 1 (3 months)

    

0.583

0.031

11.001

0.719

 Time = 2 (6 months)

    

1

   

Group × time

 [Group = 0] × [Time = 0]

    

0.222

0.002

25.915

0.535

 [Group = 0] × [Time = 1]

    

0.396

0.008

19.679

0.642

 [Group = 0] × [Time = 2]

    

1

   

 [Group = 1] × [Time = 0]

    

1

   

 [Group = 1] × [Time = 1]

    

1

   

 [Group = 1] × [Time = 2]

    

1

   
  1. aOR Odds ratio
  2. bBMI Body Mass Index
  3. cICU Intensive care unit