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Table 3 Preliminary multivariate mixed-effects model for abdominal pain severity with age as predictor and significant covariates simultaneously entered (n = 131; observations = 4890)

From: Abdominal pain during the menopause transition and early postmenopause: observations from the Seattle Midlife Women’s Health Study

  Beta Coefficient a Standard Error/Standard Deviation P-value
Fixed effects
 β1 Intercept 0.18 0.03 <  0.001
 β2 Age (−47.6) years −0.01 0.003 < 0.001
 β3 Perceived Stress −0.01 0.007 0.040
 β4 Urinary Estrone (Log 10) −0.03 0.02 0.090
 β5 Urinary Testosterone (Log 10) −0.02 0.01 0.080
 β6 Tension 0.002 0.01 0.830
 β7 Anxiety 0.06 0.01 < 0.001
Random effects
 b1 Intercept σ1   0.26  
 b2 Age (−47.6) years σ2   0.01  
 b3 Residual σ3   0.35  
  1. a The beta coefficient is a measure of the change in abdominal pain severity for every one unit of change in each respective predictor variable