Table 4 Univariable Analyses: The association between level of pre-operative disability and each independent variable

Binominal factor of man/woman

1

0.033

5.85

0.017

Age

1

0.014

2.38

0.125

BMI

2

0.015

0.26

0.288

Comorbidity

1

0.0005

0.09

0.769

Mechanism of injury

3

0.0158

0.75

0.524

Hand dominance

1

0.0033

0.31

0.735

Affected side

2

0.0327

3.06

0.049

Side operated on

1

0.0001

0.02

0.894

Symptoms duration

1

0.0069

1.26

0.264

Combined painfree ROM

1

0.305

72.69

< 0.0001

Strength (operated side)

1

0.120

22.19

< 0.0001

Smoking

1

0.025

4.27

0.040

Concurrent Osteoarthritis (Glenohumeral arthritis/humeral head migration)

1

0.001

0.24

0.627

Repair vs. no repair

1

0.006

0.97

0.325

Size of full-thickness tear (Small, moderate, large)

2

0.003

0.15

0.864

Use of medication

1

0.030

5.16

0.024

Work status (active work-related injury)

1

0.071

12.91

0.0004

Participation limitation

2

0.396

55.19

< 0.0001

Expectations with respect to improved pain

1

0.004

0.07

0.7895

Expectations with respect to improved ROM

2

0.024

2.05

0.1326

Expectations with respect to improved ADL

2

0.093

8.46

0.0003

Expectations with respect to improved interaction and providing care

2

0.119

11.03

< 0.0001

Expectations with respect to return to work

3

0.142

6.74

< 0.0001

Expectations with respect to return to sports

2

0.021

1.77

0.173

Expectations with respect to achieving full recovery

2

0.014

1.18

0.311