Calculate Xi Correlation for QR Coefficients

This function calculates the xi correlation coefficient and p-value for each variant, measuring the functional dependence between tau values and QR coefficients. Uses coef_qr_0.1 to coef_qr_0.9 (17 values, excluding 0.05 and 0.95).

Usage

calculate_xi_correlation(
  rq_coef_result,
  tau_range = seq(0.1, 0.9, by = 0.05),
  min_valid = 10
)

Arguments

rq_coef_result

Data frame containing variant_id and coef_qr_* columns

tau_range

Numeric vector of tau values to use (default: seq(0.1, 0.9, by = 0.05))

min_valid

Minimum number of valid (non-NA) coefficients required (default: 10)

Value

A data frame with variant_id, xi, and xi_pval columns