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Gait-ataxia composite from gait-variability sub-metrics

Source: R/ataxia.R
gaitAtaxiaIndex.Rd

Aggregates the standard gait-ataxia sub-metrics (each higher = more ataxic): the coefficients of variation of step width, stride length and stride time (from summarizeGaitParameters(), the cv column, in per cent) and trunk sway (e.g. cop_path_length from swayMetrics(), or trunk-marker RMS).

Usage

gaitAtaxiaIndex(
  step_width_cv = NA_real_,
  stride_length_cv = NA_real_,
  stride_time_cv = NA_real_,
  trunk_sway = NA_real_,
  reference = NULL,
  weights = NULL
)

Arguments

step_width_cv, stride_length_cv, stride_time_cv

Gait coefficients of variation (per cent); any may be NA.

trunk_sway

Trunk-sway magnitude (higher = worse); optional.

reference, weights

As in limbAtaxiaIndex().

Value

An S3 gait_ataxia list: metrics, per-metric z, and composite.

See also

summarizeGaitParameters(), swayMetrics(), limbAtaxiaIndex()

Examples

gaitAtaxiaIndex(step_width_cv = 28, stride_length_cv = 9, stride_time_cv = 6)
#> Gait-ataxia sub-metrics (higher = more ataxic):
#>   step_width_cv    28
#>   stride_length_cv 9
#>   stride_time_cv   6
#>   composite z      : NA (no reference supplied)