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Table 4 Association between DJS use and LoS for patients who underwent TKR or THR

From: The impact of a digital joint school educational programme on post-operative outcomes following lower limb arthroplasty: a retrospective comparative cohort study

Surgery

Variables

IRR est.a (SD)

p value

95% C.I.

Patients who underwent a TKR

Sex

0.962 (0.042)

0.382

0.879 to 1.053

Age/10

0.293 (0.067)

< 0.001***

0.183 to 0.470

(Age/10)2

1.110 (0.019)

< 0.001***

1.072 to 1.150

ln((CCI + 1)/10)

1.210 (0.030)

< 0.001***

1.149 to 1.274

Pre-operative EQ-5D

0.810 (0.072)

0.027*

0.673 to 0.974

DJS

1.042 (0.051)

0.407

0.942 to 1.154

Patients who underwent a THR

Sex

0.858 (0.044)

0.010**

0.768 to 0.957

(Age/10)2

0.932 (0.014)

< 0.001***

0.902 to 0.962

(Age/10)3

1.008 (0.015)

< 0.001***

1.005 to 1.012

CCI

1.051 (0.006)

< 0.001***

1.038 to 1.065

Pre-operative EQ-5D

0.854 (0.115)

0.265

0.638 to 1.144

DJS

0.667 (0.177)

< 0.001***

0.585 to 0.760

  1. All figures are to 3 decimal places
  2. * p value < 0.05
  3. ** p value < 0.01
  4. *** p value < 0.001
  5. aIncidence Rate Ratio estimate (IRR est.)