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Table 2 Mediating effect of performing shoulder-arm exercises for 30 min/day on the relationship between severity of symptoms and quality of life (N = 117)

From: Mediating effects of shoulder-arm exercise on the postoperative severity of symptoms and quality of life of women with breast cancer

Effect

1

2

3

(Constant)

126.000 (6.331)***

133.171 (4.957)***

129.417 (5.117)***

Treatment received after surgery

(reference = none)

 1 = Chemotherapy

−22.681 (6.736)**

−9.578 (5.411)

−8.846 (5.315)

 2 = Radiotherapy

−19.750 (12.663)

3.842 (10.140)

4.107 (9.943)

 3 = Hormone treatment

−4.000 (9.391)

−5.196 (7.254)

−5.004 (7.113)

Independent variable

 Severity of symptoms

 

−0.446 (0.051)***

−0.425 (0.050)***

Mediating variable

 Performing shoulder-arm exercises 30 min/day (reference = No)

  

8.204 (3.499)*

Adj. R2

0.10

0.46

0.48

F (p)

5.408 (0.002)

26.165 (< 0.001)

22.873 (< 0.001)

  1. Standard errors are in parentheses
  2. * p < 0.05; ** p < 0.01; *** p < 0.001