Table 2 Spearman correlations of COR reconstruction with the Barthel Index, PMS, and NRS

Barthel Index upon discharge

Cor

0.357

0.353

0.008

0.302

0.059

p-Value

0.013

0.014

0.947

0.041

0.632

N

48

48

64

46

68

Barthel Index after 6 months

Cor

0.366

0.368

−0.066

0.223

−0.167

p-Value

0.06

0.059

0.706

0.284

0.322

N

27

27

35

25

37

Barthel Index after 12 months

Cor

0.315

0.315

0.131

0.339

−0.173

p-Value

0.11

0.11

0.452

0.097

0.305

N

27

27

35

25

37

PMS after 6 months

Cor

0.471

0.469

0.169

0.477

0.032

p-Value

0.009

0.009

0.309

0.01

0.847

N

30

40

38

30

40

PMS after 12 months

Cor

0.472

0.462

0.415

0.67

0.106

p-Value

0.008

0.01

0.01

 < 0.001

0.513

N

30

30

38

28

40

NRS after 6 months

Cor

−0.212

−0.207

0.231

0.135

0.09

p-Value

0.245

0.256

0.164

0.477

0.582

N

32

32

38

30

40

NRS after 12 months

Cor

−0.235

−0.225

0.17

0.03

0.042

p-Value

0.188

0.208

0.299

0.872

0.795

N

33

33

39

31

41