Table 2 Between-group comparisons of PRTEE scores at baseline, after 3rd and 7th week of treatment.

From: Effects of extracorporeal shockwave therapy versus ultrasonic therapy and deep friction massage in the management of lateral epicondylitis: a randomized clinical trial

Outcome at time points

Groups

n

Mean

Std. Dev

Mean Ranks

Mann–Whitney U

Z

P-value

PRTEE at baseline

A

37

25.857

3.9771

36.64

652.5

− 0.326

0.745

B

43

25.897

3.635

38.27

PRTEE at 3rd week

A

35

11.143

4.0757

19.67

58.5

− 6.761

 < 0.001*

B

39

21.013

4.0401

53.5

PRTEE at 7th week

A

35

2.014

2.4479

18

0.000

− 7.442

 < 0.001*

B

39

11.833

2.2634

55

  1. *Significant.
  2. PTREE: patient-rated tennis elbow evaluation questionnaire.
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