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Table 2 Hierarchical Linear Models of Quality of Life, Fatigue, Perceived Stress, Natural Killer Cell Activity

From: Impact of partial versus whole breast radiation therapy on fatigue, perceived stress, quality of life and natural killer cell activity in women with breast cancer

Variable Unstandardized Coefficients (SE)
  Quality of Life (FACT-G) Fatigue (FACT-F) Perceived Stress (PSS) NKCA (Natural Killer Cell Activity)
Fixed effects:     
  Intercept 92.2 (21.5)** 48.1 (4.0)** 16.0 (2.9) 106.9 (38.7)
  Time a(linear) -.74 (.46) -1.22 (.56)* -.42 (.39) -5.00 (3.28)
Intercept:     
  Group 4.44 (4.59) 4.62 (3.48) -.88 (2.50) -25.86 (33.52)
  Age 0.08 (.29) .14 (.22) -.22 (.16) 1.03 (2.14)
  HT 1.25 (5.81) 3.22 (3.39) -3.19 (3.18) -7.91 (45.95)
Linear Slope     
  Time x Group 1.11 (.56)* 1.11 (.51)* -.10 (.35) 2.06 (3.04)
  Time x Age .04 (.04) .04 (.03) .01 (.02) -.18 (.08)
  Time x Anti-Estrogen Therapy .40 (.83) .86 (.61) .10 (.44) 2.97 (3.08)
Variance Components     
  In intercept 116.89*** 62.89*** 31.37*** 6514.53***
  In linear slope 1.41** .48 .10 31.36**
  1. Abbreviations: FACT-G = Functional Assessment of Cancer Therapy – General; FACT-F = Functional Assessment of Cancer Therapy - Fatigue, PSS = Perceived Stress Scale, NKCA = Natural Killer Cell Activity.
  2. aTime was coded 0 at the time of the diagnosis. *p < 0.05, **p < .01, ***p < 0.001.