columna API reference - v0.3.0
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    Function mixedModel

    • Random-intercept (+ optional independent random slope) linear mixed model via iterative GLS. Backward compatible: pass group for RI-only; or slope covariate for RI+RS. Nested two-level RI: group = outer, groupNested = inner (IDs unique within outer). Crossed RI: group + group2 (independent intercepts).

      Parameters

      • y: ArrayLike<number>
      • options: {
            confidence?: number;
            fixed: ArrayLike<ArrayLike<number>>;
            group: ArrayLike<string | number>;
            group2?: ArrayLike<string | number>;
            groupNested?: ArrayLike<string | number>;
            intercept?: boolean;
            maxIter?: number;
            names?: string[];
            reml?: boolean;
            slope?: ArrayLike<number>;
        }
        • Optionalconfidence?: number
        • fixed: ArrayLike<ArrayLike<number>>
        • group: ArrayLike<string | number>
        • Optionalgroup2?: ArrayLike<string | number>

          Second crossed random-intercept factor (independent of group).

        • OptionalgroupNested?: ArrayLike<string | number>

          Inner nesting factor (nested within group).

        • Optionalintercept?: boolean
        • OptionalmaxIter?: number
        • Optionalnames?: string[]
        • Optionalreml?: boolean
        • Optionalslope?: ArrayLike<number>

          Optional continuous covariate for random slope (correlated with intercept).

      Returns MixedModelResult