[
 {"id":"C1","text":"The OLS Okun coefficient over 1960Q1-2019Q4 is about -0.256 pp of unemployment per 1% of quarterly real GDP growth.","results_keys":["beta_hat","n_analysed","first_quarter","last_quarter"],"status":"supported","caveat":"Contemporaneous linear projection; current-vintage data."},
 {"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 [-0.326, -0.186].","results_keys":["okun_negative_5pct","se_hac","hac_lags","beta_ci_low","beta_ci_high","t_stat_hac","p_value_hac_two_sided"],"status":"supported","caveat":"Normal approximation; rule-of-thumb bandwidth; robust across 0-12 lags."},
 {"id":"C3","text":"Residuals are positively autocorrelated, and the HAC SE is about 1.8 times the conventional iid SE, so iid inference understates uncertainty.","results_keys":["se_hac","se_iid","resid_autocorr_lag1_4","se_hac_by_lags"],"status":"supported","caveat":"Ratio depends somewhat on bandwidth."},
 {"id":"C4","text":"Growth explains about 41% of the variance of quarterly unemployment changes; the implied growth rate that keeps unemployment stable is about 0.72% per quarter, close to the sample mean growth of 0.754%.","results_keys":["r_squared","alpha_hat","beta_hat","mean_growth"],"status":"supported","caveat":"The stable-unemployment growth rate is -alpha_hat/beta_hat, derived from these reported keys."}
]