{
  "n_posts": 82,
  "window_utc": [1744675200.0, 1748131200.0],
  "notes": "PullPush archive slice; titles parsed for scores/teams — not official box-score join.",
  "bivariate": {
    "spearman_margin_vs_log1p_comments": { "rho": 0.069, "p_two_sided": 0.537 },
    "spearman_total_pts_vs_log1p_comments": { "rho": -0.014, "p_two_sided": 0.899 },
    "spearman_tier_sum_vs_log1p_comments": { "rho": 0.101, "p_two_sided": 0.366 },
    "mann_whitney_regulation_vs_ot_log1p": { "p_two_sided": 0.166, "n_regulation": 78, "n_ot": 4 }
  },
  "ot_flag_confound": {
    "n_ot_threads": 4,
    "ot_threads_with_zero_comments": 3,
    "interpretation": "OT coefficient in OLS is not interpretable as 'OT lowers engagement' — three OT rows have num_comments=0 (likely removed threads or archive gaps), so the negative coefficient is driven by selection, not overtime."
  },
  "ols_hc1_core": {
    "margin_z_coef": 0.012,
    "margin_z_p": 0.963,
    "total_pts_z_coef": -0.006,
    "total_pts_z_p": 0.984,
    "ot_int_coef": -1.644,
    "ot_int_p": 0.075,
    "r_squared": 0.017,
    "adj_r_squared": -0.02
  },
  "ols_with_tier_sum": {
    "tier_sum_coef": 0.364,
    "tier_sum_p": 0.244
  },
  "team_fixed_effects_model": {
    "f_statistic_p": 0.0024,
    "interpretation": "Joint significance of team dummies reflects matchup/round heterogeneity and small-N per cell — not a clean causal 'team effect' on Reddit."
  },
  "mixedlm": {
    "group_variance_near_zero": true,
    "note": "Random home intercept does not add explanatory power in this slice once fixed predictors are included."
  },
  "headline": "No robust linear relationship between margin, total points, or coarse market tier and log comment volume at alpha=0.05. Team FE block is significant but confounded. OT term is misleading due to zero-comment OT threads."
}