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Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 4 Group comparison of intra- and intergroup temporal variations in measurement a

From: A comparison of ice wrap and subacromial injection for postoperative pain and edema control following arthroscopic rotator cuff repair

 

Groups

Statistics

Ice wrap

\(\stackrel{-}{x}\pm sd\)

SI

\(\stackrel{-}{x}\pm sd\)

Ice wrap

\(\stackrel{-}{x}\pm sd\)

F

P

Preop measurement a (cm)*

22.04 ± 2.1

22.05 ± 2.52

21.12 ± 2.19

0.957

0.390

Measurement a (cm) at 0 days postop

24.56 ± 2.14

24.6 ± 2.23

24.06 ± 2.26

0.323

0.725

Measurement a (cm) at 1 day postop

24.21 ± 2.19

24.17 ± 2.42

23.62 ± 2.22

0.375

0.689

Measurement a (cm) at 7 days postop

22.80 ± 2.16

22.7 ± 2.27

22.00 ± 2.16

0.699

0.501

Measurement a (cm) at 14 days postop

22.30 ± 2.11

22.2 ± 2.5

21.43 ± 2.36

0.735

0.484

Measurement a (cm) at 21 days postop

22.04 ± 2.09

21.9 ± 2.08

21.06 ± 2.08

1.012

0.311

Test statistics

F = 22.90*

p < 0.001

F = 20.92*

p < 0.001

F = 21.88*

p < 0.001

 

Model statistics*

 

F

P

Group effect

0.729

0.487

Time effect

65.125

 < 0.001

Effect of group × time interaction

0.223

0.994

  1. *Two-way repeated-measures variance analysis; a, b, c are results of inline multiple comparison test with Bonferroni correction