Table 3 Linear multivariable model for Set 2

Intercept

35.56 [33.15; 37.97]

36.19 [32.6; 39.77]

Patient and disease-related factors (N = 4)

ASA classification

 I

Ref

Ref

 II

 − 0.11 [− 1.03; 0.8]

0.31 [− 1.08; 1.69]

 III

 − 1.59 [− 2.95; − 0.22]

 − 2.57 [− 4.79; − 0.35]

Symptom duration

 Less than a month

Ref

Ref

 One to 3 months

 − 1.02 [− 2.51; 0.47]

 − 1.42 [− 3.74; 0.9]

 Three to 6 months

 − 1.65 [− 3.12; − 0.18]

 − 1.68 [− 3.92; 0.56]

 Six months to 1 year

 − 3.07 [− 4.58; − 1.56]

 − 3.36 [− 5.62; − 1.1]

 More than a year

 − 2.68 [− 4.12; − 1.24]

 − 2.31 [− 4.47; − 0.14]

Level of depression and anxiety (EQ-5D-5L)

 Not anxious/depressed

Ref

Ref

 A bit anxious/depressed

 − 1.11 [− 2.07; − 0.15]

 − 1.3 [− 2.7; 0.11]

 At least moderately anxious/depressed

 − 4.08 [− 5.31; − 2.84]

 − 2.91 [− 4.78; − 1.05]

 Baseline Oxford Shoulder Score

0.3 [0.25; 0.35]

0.28 [0.2; 0.35]

Operative findings and details (N = 3)

Operation duration, in minutes

 − 0.03 [− 0.04; − 0.01]

 − 0.04 [− 0.07; − 0.02]

Tear severity (Gerber classification)

 Partial tear

Ref

Ref

 Single full tear

0.84 [− 0.22; 1.89]

0.84 [− 0.73; 2.41]

 Two or three tendons (only one full)

0.93 [− 0.32; 2.18]

0.66 [− 1.25; 2.56]

 Massive tear

1.83 [0.48; 3.18]

2.9 [0.88; 4.92]

Biceps status & treatment

 No treatment

Ref

Ref

 Tenotomy

 − 0.78 [− 2.18; 0.62]

 − 0.31 [− 2.33; 1.71]

 Tenodesis

0.48 [− 0.71; 1.67]

1.24 [− 0.55; 3.04]

 Already ruptured/treated

0.07 [− 1.71; 1.86]

0.99 [− 2.08; 4.05]