Table 2 Univariate and multivariate cox regression analyses for overall prosthesis survival and for survival of the stem separately. (HR: hazard ratio; ASA: American Society of Anesthesiologists classification)

 No

1

1

1

1

 Yes

1.6 (1.2–2.3)

< 0.01

1.4 (0.9–2)

1 (0.6–1.6)

0.8 (0.5–1.5)

Age

0.97 (0.95–0.98)

< 0.01

0.97 (0.95–0.99)

0.97 (0.95–0.99)

0.99 (0.96–1.01)

BMI

1 (0.97–1.03)

0.9

1 (0.96–1.04)

 Male

1

1

 Female

0.9 (0.6–1.3)

0.5

0.7 (0.4–1.1)

 No

1

1

1

 Yes

1.6 (1–2.4)

0.04

1 (0.6–1.6)

1.6 (0.9–2.9)

 I

1

1

 II

1 (0.6–1.6)

0.8

0.9 (0.5–1.8)

 III-IV

1 (0.6–1.8)

1

0.6 (0.3–1.5)

 A1/A2

1

1

1

 B1

0.4 (0.2–0.9)

0.02

0.6 (0.3–1.2)

0.6 (0.2–1.5)

 B2/B3

0.7 (0.3–1.6)

0.4

0.7 (0.3–2)

0.9 (0.3–2.7)

 2014

1

1

 2015

0.9 (0.6–1.3)

0.5

0.8 (0.5–1.4)

 2016

1.1 (0.7–1.7)

0.6

1.1 (0.6–2)

 Left

1

1

 Right

0.8 (0.6–1.1)

0.2

0.7 (0.4–1.1)

 Osteoarthritis

1

1

1

1

 Fracture

2.9 (2.0–4.1)

< 0.01

1.8 (1.1–2.8)

2.1 (1.3–3.5)

1.5 (0.9–2.7)

 Cuff arthropathy

0.9 (0.3–2.9)

0.9

1.3 (0.4–4.1)

0.5 (0.07–3.7)

0.7 (0.1–5.5

 Other

2.4 (0.6–9.7)

0.2

1.7 (0.4–7.0)

2 (0.3–14.4)

1.6 (0.2–11.8)

 Deltopectoral

1

1

 Anterosuperior

0.9 (0.5–1.6)

0.7

0.8 (0.3–1.9)

 Total shoulder prosthesis

1

1

1

1

 Hemi shoulder prosthesis

2.5 (1.8–3.5)

< 0.01

2 (1.3–3.1)

2.2 (1.4–3.6)

2 (1.2–3.4)

 Uncemented

1

1

 Cemented

1.1 (0.8–1.6)

0.5

0.8 (0.5–1.4)

 No

1

1

1

1

 Yes

2.7 (1.8–4)

< 0.01

1.9 (1.2–3)

4.3 (2.6–7.1)

3.9 (2.3–6.6)