Generalized linear mixed-effects model fit by PL

Model information:
    Number of observations              18
    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
    -7.31    -2.86    8.66             -17.31  
Fixed effects coefficients (95% CIs):
    Name                      Estimate    SE      tStat    DF       pValue    Lower    Upper
    {'(Intercept)'   }         0.69       0.06    10.78    14.00    0.00       0.55    0.83 
    {'Group_wt'      }         0.30       0.11     2.70    14.00    0.02       0.06    0.54 
    {'Sex_M'         }        -0.02       0.08    -0.26    14.00    0.80      -0.20    0.15 
    {'Group_wt:Sex_M'}         0.03       0.15     0.21    14.00    0.84      -0.30    0.36 
Random effects covariance parameters:
Group: Error
    Name                        Estimate
    {'sqrt(Dispersion)'}        0.19