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Table 4 Sub-group comparisons between patch and non-patch groups over 6 month follow up

From: The use of a synthetic shoulder patch for large and massive rotator cuff tears – a feasibility study

Group

Oxford score

SPADI

Constant score

Patch poor

 Baseline

24 (21–36)

51.5 (31.5–73.1)

34 (27–58)

 6 months

42 (35–48)

16.2 (6.2–17.7)

53 (40.5–65.5)

Patch better

 Baseline

29 (21–34)

38.8 (29.9–71.5)

45.5 (24–54.5)

 6 months

42 (40–46)

20 (11.5,28.5)

58.5 (55.5–66.5)

*Difference in medians (95% CI)

0.0 (−8.2,8.2)

2.4 (−21.6,26.3)

9.6 (−5.9,25.2)

P-value

0.99

0.84

0.21

Non-patch arthroscopy

 Baseline

23.5 (19.5–29)

61.9 (40.4–67.7)

44.3 (37.5–50.2)

 6 months

29 (29–31)

42.3 (10.8,49.4)

49.5 (43.5–64)

Non-patch (excluding arthroscopy)

 Baseline

26 (21–30)

51.5 (42.3–61.5)

41.5 (31–53.1)

 6 months

35.5 (25.5–45.5)

30 (6.9–53.5)

56.5 (41.5–63.5)

*Difference in medians (95% CI)

−5.6 (−9.5,20.7)

2.36 (−34.9,39.6)

2.83 (−14.4,20.1)

P-value

0.45

0.90

0.74

  1. * Results at 6 months from quantile regression adjusting for baseline score
  2. Values are median (IQR)