Generalized linear mixed-effects model fit by PL

Model information:
    Number of observations              21
    Fixed effects coefficients           4
    Random effects coefficients          0
    Covariance parameters                1
    Distribution                    Gamma 
    Link                            Power 
    FitMethod                       MPL   

Formula:
    WB ~ 1 + Group*Sex

Model fit statistics:
    AIC      BIC      LogLikelihood    Deviance
    -5.48    -0.26    7.74             -15.48  
Fixed effects coefficients (95% CIs):
    Name                      Estimate    SE      tStat    DF       pValue    Lower    Upper
    {'(Intercept)'   }         0.84       0.06    13.51    17.00    0.00       0.71    0.97 
    {'Group_wt'      }         0.13       0.11     1.23    17.00    0.23      -0.09    0.36 
    {'Sex_M'         }         0.07       0.09     0.75    17.00    0.46      -0.12    0.26 
    {'Group_wt:Sex_M'}        -0.01       0.15    -0.06    17.00    0.95      -0.33    0.31 
Random effects covariance parameters:
Group: Error
    Name                        Estimate
    {'sqrt(Dispersion)'}        0.18