ModelSummary
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Overview
  model type                          : non-ODE
  fixed-effect blocks                 : 4
  fixed-effect scalar values          : 8
  random effects                      : 1
  random-effect grouping columns      : 1
  covariates (declared)               : 2
  formulas (deterministic / outcomes) : 4 / 1
  requires DE accessors               : false

Structure blocks
  helpers              : true
  fixed effects        : true
  random effects       : true
  covariates           : true
  preDE                : false
  DifferentialEquation : false
  initialDE            : false

Covariate classes
  varying  : 2
  constant : 0
  dynamic  : 0

Fixed-effects declarations
  name   type        size  se  prior      scale       bounds                              details
  ------------------------------------------------------------------------------------------------------------
  beta0  RealNumber     1  yes  Priorless  identity    finite lower 0/1, finite upper 0/1  -
  beta   RealVector     5  yes  Priorless  identityx5  finite lower 0/5, finite upper 0/5  -
  omega  RealNumber     1  yes  Priorless  log         finite lower 1/1, finite upper 0/1  -
  log_r  RealNumber     1  yes  Priorless  identity    finite lower 0/1, finite upper 0/1  -

Random-effects declarations
  name  group    dist  
  -----------------------
  eta   Subject  Normal

Covariate declarations
  name      kind             columns                   constant_on           interpolation
  -------------------------------------------------------------------------------------------------
  period_f  Covariate        period_f                  -                     -
  x         CovariateVector  base_log, age_log, trt_active, period_centered, trt_period_centered  -                     -

Formulas
  deterministic names : log_rate, lambda, r, p
  outcome names       : seizures
  required DE states  : (none)
  required DE signals : (none)
  declared DE states  : (none)
  declared DE signals : (none)
Outcome distribution types
  seizures => NegativeBinomial

Helper functions
  names : safe_exp, linpred