Table 3.

Model summary: average pain intensity.

Parameters	Fixed linear	Covariates
Regression coefficients (fixed effects)
Intercept	3.78*	2.92
Time	−0.06	−0.06
Age		0.21
Insurance type		0.89
Sex		−0.54
Variance components (random effects)
Residual	59.80†	59.69†
Intercept	2.97	2.61
Linear slope
Intercept/linear slope covariance
Model summary
Log likelihood	−1938.08	−1936.31
Number of estimated parameters	4	7

^*P < .01.

^†P < .05.