{
  "schema_errors": [],
  "variant_summary": [
    {
      "variant": "control",
      "n": 12,
      "resolved_rate": 0.583333,
      "minutes_mean": 62.083333,
      "cost_mean": 1.220833,
      "latency_mean_ms": 440.416667,
      "negative_feedback_rate": 0.25
    },
    {
      "variant": "treatment",
      "n": 12,
      "resolved_rate": 0.833333,
      "minutes_mean": 49.083333,
      "cost_mean": 1.3625,
      "latency_mean_ms": 492.916667,
      "negative_feedback_rate": 0.166667
    }
  ],
  "srm": {
    "observed": {
      "control": 12,
      "treatment": 12
    },
    "expected_allocation": {
      "control": 0.5,
      "treatment": 0.5
    },
    "chi_square": 0.0,
    "p_value": 1.0,
    "status": "pass"
  },
  "balance": [
    {
      "field": "pre_week_tasks",
      "standardized_mean_difference": 0.0,
      "abs_standardized_mean_difference": 0.0,
      "status": "pass"
    },
    {
      "field": "historical_resolution_rate",
      "standardized_mean_difference": 0.0,
      "abs_standardized_mean_difference": 0.0,
      "status": "pass"
    }
  ],
  "primary_effect": {
    "control_mean": 0.583333,
    "treatment_mean": 0.833333,
    "effect": 0.25,
    "standard_error": 0.186339,
    "ci95_low": -0.115224,
    "ci95_high": 0.615224,
    "p_value": 0.179712
  },
  "cuped_effect": {
    "theta": 3.107096,
    "covariate": "historical_resolution_rate",
    "effect": 0.25,
    "standard_error": 0.162557,
    "ci95_low": -0.068612,
    "ci95_high": 0.568612,
    "p_value": 0.124068
  },
  "guardrails": [
    {
      "metric": "negative_feedback",
      "control_mean": 0.25,
      "treatment_mean": 0.166667,
      "delta": -0.083333,
      "threshold": 0.05,
      "direction": "lower_or_equal",
      "status": "pass"
    },
    {
      "metric": "latency_ms",
      "control_mean": 440.416667,
      "treatment_mean": 492.916667,
      "delta": 52.5,
      "threshold": 110,
      "direction": "lower_or_equal",
      "status": "pass"
    },
    {
      "metric": "cost_eur",
      "control_mean": 1.220833,
      "treatment_mean": 1.3625,
      "delta": 0.141667,
      "threshold": 0.35,
      "direction": "lower_or_equal",
      "status": "pass"
    }
  ],
  "slice_effects": [
    {
      "control_mean": 0.25,
      "treatment_mean": 0.75,
      "effect": 0.5,
      "standard_error": 0.353553,
      "ci95_low": -0.192965,
      "ci95_high": 1.192965,
      "p_value": 0.157299,
      "segment": "becas",
      "n": 8
    },
    {
      "control_mean": 1.0,
      "treatment_mean": 1.0,
      "effect": 0.0,
      "standard_error": 0.0,
      "ci95_low": 0.0,
      "ci95_high": 0.0,
      "p_value": 1.0,
      "segment": "matricula",
      "n": 8
    },
    {
      "control_mean": 0.5,
      "treatment_mean": 0.75,
      "effect": 0.25,
      "standard_error": 0.381881,
      "ci95_low": -0.498487,
      "ci95_high": 0.998487,
      "p_value": 0.512691,
      "segment": "practicas",
      "n": 8
    }
  ],
  "readiness": {
    "alpha": 0.05,
    "power": 0.8,
    "baseline_rate": 0.58,
    "planned_minimum_detectable_effect": 0.05,
    "z_alpha": 1.959964,
    "z_power": 0.841621,
    "current_min_n_per_variant": 12,
    "required_n_per_variant_for_planned_mde": 1530,
    "observed_minimum_detectable_effect_with_current_n": 0.564504,
    "checks": [
      {
        "check": "aa_test",
        "status": "review",
        "message": "Ejecutar A/A antes del A/B para validar instrumentación, reparto y métricas."
      },
      {
        "check": "exposure_event",
        "status": "pass",
        "message": "Registrar evento de exposición `experiment_exposure`."
      },
      {
        "check": "persistent_assignment",
        "status": "pass",
        "message": "La unidad debe conservar variante durante la ventana de medición."
      },
      {
        "check": "planned_sample_size",
        "status": "review",
        "message": "n actual por variante 12; n recomendado por variante para MDE 0.05: 1530."
      },
      {
        "check": "peeking_policy",
        "status": "pass",
        "message": "No mirar para decidir antes de cerrar la ventana planificada."
      },
      {
        "check": "rollout_policy",
        "status": "pass",
        "message": "Ramp inicial 5%, pasos [5, 25, 50, 100]."
      }
    ],
    "status": "review"
  },
  "status": "review",
  "reasons": [
    "readiness en revisión: aa_test",
    "readiness en revisión: planned_sample_size",
    "efecto prometedor pero intervalo aún cruza el efecto mínimo"
  ]
}