[
 {"id":"C1","text":"The OLS Okun coefficient over 1960Q1-2019Q4 is about -0.256 pp of unemployment per percent of quarterly (non-annualised) real GDP growth.","results_keys":["beta_hat","n_analysed","first_quarter","last_quarter"],"status":"supported","caveat":"Linear projection, current-vintage data; not a causal estimate."},
 {"id":"C2","text":"The Okun coefficient is negative and significantly different from zero at the 5% level using a Newey-West HAC SE with 4 lags (95% CI about [-0.326, -0.186]).","results_keys":["se_hac","hac_lags","beta_ci_low","beta_ci_high","okun_negative_5pct"],"status":"supported","caveat":"Asymptotic normal critical values; result robust to bandwidths 0-16."},
 {"id":"C3","text":"The HAC standard error is about 1.8 times the conventional iid standard error, so the naive SE overstates precision.","results_keys":["se_iid","se_hac"],"status":"supported","caveat":"Part of the gap reflects heteroskedasticity, not only autocorrelation."},
 {"id":"C4","text":"Growth explains about 41% of the variance of quarterly unemployment changes.","results_keys":["r_squared"],"status":"supported","caveat":"In-sample fit only."}
]