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Table 3 Results from Propensity Score Matching (1-to-1 matching)

From: Patient-reported outcomes following cemented versus cementless primary total knee arthroplasty: a comparative analysis based on propensity score matching

Outcomes

KOOS-Jr

PROMIS-PH

NPRS

\(\beta\)

P

\(\beta\)

P

\(\beta\)

P

Surgical approach (ref = cementless)

   Cemented

-1.37

.113

-0.11

.766

-0.34

.022

Follow-up (ref = baseline)

  1-month

15.7

.000

3.43

.000

-2.48

.000

  3-month

21.0

.000

5.90

.000

-3.17

.000

  6-month

23.5

.000

7.17

.000

-3.42

.000

Approach interaction (ref = cementless)

  Cemented *1-month

2.46

.042

0.61

.303

0.04

.862

  Cemented *3-month

2.80

.037

1.19

.076

-0.07

.740

  Cemented *6-month

3.33

.028

0.69

.302

0.05

.836

AGE

  Age (mean)

0.27

.000

0.09

.000

-0.03

.000

Sex (ref = male)

  Female

-1.48

.023

-1.09

.001

0.20

.058

  Body Mass Index

-0.08

.091

-0.16

.000

0.002

.813

Race (ref = white)

  Black

-3.41

.004

-1.86

.000

1.11

.000

  Other or multiple

-1.39

.271

-1.91

.000

0.58

.001

Hispanic (ref = no)

  Yes

2.51

.106

1.28

.064

0.43

.077

Education (ref = less than college)

  College or higher

0.61

.392

0.93

.008

-0.20

.074

Working status (ref = working)

  Unemployed

-0.68

.728

-0.81

.337

0.03

.945

  Sick leave or maternity leave

-2.69

.036

-4.13

.000

0.90

.000

  Disabled due to hip or knee pain

0.55

.497

-0.84

.038

-0.02

.904

Alcohol use (ref = never)

  Monthly or less

-1.10

.227

0.52

.213

0.06

.652

  2–4 times a month

-2.11

.061

0.48

.329

0.04

.798

  2–3 times a week

-0.01

.995

1.64

.000

-0.19

.229

  4 or more times a week

0.79

.502

1.72

.001

-0.25

.135

Smoke (ref = never)

  Current

-3.69

.029

-1.43

.078

0.59

.015

  Former

-0.57

.411

-1.00

.003

0.11

.339

Comorbidity (ref = no)

  COPD

-2.18

.152

-1.54

.009

0.07

.746

  Paralysis

15.9

.028

15.2

.000

-1.69

.173

  Heart attack

0.22

.863

-0.09

.888

0.36

.149

  Carotid artery disease

-1.28

.621

-0.24

.858

-0.23

.626

  Stroke

2.00

.279

0.53

.507

-1.60

.680

  Rheumatoid arthritis

-1.73

.243

-1.64

.004

0.41

.038

  Diabetes

1.98

.022

-0.72

.108

0.03

.827

  Cancer

1.46

.210

0.45

.374

-0.11

.493

  Liver disease

-0.34

.876

0.66

.507

-0.48

.142

  Peripheral vascular disease

3.13

.133

-1.26

.192

-0.48

.149

  Kidney disease

-6.15

.000

-4.04

.000

0.53

.077

  Ulcer disease

-6.90

.007

-2.92

.000

0.81

.023

  HIV or AIDS

-5.50

.289

-4.44

.084

1.12

.194

  Constant

37.3

.000

43.5

.000

7.17

.000

  1. Note: The estimated coefficients were from 1 to 1 nearest matching within caliper (0.25 SD)