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Table 4 Hazard ratio for 90-day mortality

From: Early postoperative mortality after simultaneous or staged bilateral primary total hip arthroplasty: an observational register study from the swedish Hip arthroplasty register

 

Crude

Adjusted

 

HR

CI (95%)

p

HR

CI (95%)

p

Time interval

      

Simultaneous

0.69

0.4-2.2

0.82

1.3

0.5-3.3

0.59

≤6 months

0.9

0.5-1.5

0.63

1.1

0.6-2.0

0.72

7-12 months

0.5

0.3-1.0

0.03

0.7

0.4-1.2

0.14

>12 months (ref)a

1.0

-

-

1.0

-

-

Sex

      

Male

1.0

-

-

1.0

-

-

Female

0.7

0.5-1.0

0.06

0.6

0.4-0.9

0.01

Age

      

<50

1.1

0.4-3.2

0.80

1.0

0.3-3.0

0.98

50-59

0.7

0.3-1.5

0.36

0.7

0.3-1.5

0.34

60-75 (ref)

1.0

-

-

1.0

-

-

>75

3.6

2.6-5.8

<0.001

3.8

2.6-5.6

<0.001

Fixation

      

Cemented (ref)

1.0

-

-

1.0

-

-

Uncemented

0.5

0.2-1.1

0.09

0.9

0.4-2.2

0.80

Otherb

0.7

0.4-1.3

0.27

1.1

0.6-2.2

0.75

Diagnoses

      

OA (ref)

1.0

-

-

1.0

-

-

RA

1.7

0.9-3.3

0.13

2.3

1.1-4.7

0.02

Otherc

0.4

0.1-1.7

0.24

0.6

0.1-2.4

0.44

  1. Adjustment for sex, age, diagnosis, and type of prosthesis fixation.
  2. aRef: reference.
  3. bHybrid, reversed hybrid, and resurfacing.
  4. cSequelae from childhood hip disease, idiopathic femoral head necrosis, secondary OA.
  5. Number of events 125.
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