{
  "report_id": "103-rating-exertion",
  "status": "validated",
  "version": "1.0",
  "publication": {
    "headline": "Las clases percibidas como más exigentes coinciden con 0,27 puntos más de valoración",
    "canonical_url": "https://wodbuster.com/observatorio/esfuerzo-valoracion-clases/",
    "date_modified": "2026-07-18"
  },
  "period": {
    "start": "2025-08-01",
    "end": "2025-12-31"
  },
  "definition": {
    "rating": "Valoración voluntaria posterior a clase, escala ordinal 1–5.",
    "perceived_exertion": "Esfuerzo percibido informado tras la misma clase, escala ordinal 1–5.",
    "association": "Correlación interna por centro calculada sobre pares de respuestas; después se resume con la mediana entre centros."
  },
  "rules": {
    "minimum_paired_responses_per_center": 20,
    "minimum_responses_per_exertion_score": 10,
    "minimum_centers_per_public_group": 30
  },
  "sample": {
    "tenants_attempted": 2174,
    "tenants_succeeded": 2174,
    "tenants_failed": 0,
    "centers_with_any_pair": 426,
    "paired_responses": 20542,
    "eligible_centers": 135
  },
  "association": {
    "correlation": {
      "minimum_responses": 20,
      "centers": 135,
      "median_within_center_correlation": 0.106,
      "bootstrap_95_ci": [
        0.051,
        0.136
      ],
      "centers_positive_pct": 67.41
    },
    "correlation_distribution": {
      "p25": -0.05,
      "median": 0.106,
      "p75": 0.236
    },
    "low_vs_high_effort": {
      "minimum_responses_per_band": 10,
      "centers": 47,
      "low_effort_median_rating": 4.35,
      "high_effort_median_rating": 4.59,
      "median_paired_difference": 0.266,
      "bootstrap_95_ci": [
        0.092,
        0.354
      ],
      "centers_high_effort_higher_pct": 65.96
    },
    "low_vs_high_sensitivity_5": {
      "minimum_responses_per_band": 5,
      "centers": 84,
      "low_effort_median_rating": 4.44,
      "high_effort_median_rating": 4.62,
      "median_paired_difference": 0.246,
      "bootstrap_95_ci": [
        0.1,
        0.338
      ],
      "centers_high_effort_higher_pct": 65.48
    },
    "low_vs_high_sensitivity_20": {
      "minimum_responses_per_band": 20,
      "centers": 32,
      "low_effort_median_rating": 4.34,
      "high_effort_median_rating": 4.61,
      "median_paired_difference": 0.277,
      "bootstrap_95_ci": [
        0.176,
        0.343
      ],
      "centers_high_effort_higher_pct": 75.0
    }
  },
  "rating_by_exertion": [
    {
      "perceived_exertion": 2,
      "centers": 49,
      "responses": 2035,
      "median_center_rating": 4.39,
      "median_center_high_rating_share_pct": 90.0
    },
    {
      "perceived_exertion": 3,
      "centers": 127,
      "responses": 8088,
      "median_center_rating": 4.55,
      "median_center_high_rating_share_pct": 95.21
    },
    {
      "perceived_exertion": 4,
      "centers": 106,
      "responses": 6207,
      "median_center_rating": 4.64,
      "median_center_high_rating_share_pct": 96.06
    },
    {
      "perceived_exertion": 5,
      "centers": 38,
      "responses": 1269,
      "median_center_rating": 4.71,
      "median_center_high_rating_share_pct": 93.04
    }
  ],
  "threshold_sensitivities": [
    {
      "minimum_responses": 20,
      "centers": 135,
      "median_within_center_correlation": 0.106,
      "bootstrap_95_ci": [
        0.051,
        0.136
      ],
      "centers_positive_pct": 67.41
    },
    {
      "minimum_responses": 50,
      "centers": 69,
      "median_within_center_correlation": 0.118,
      "bootstrap_95_ci": [
        0.093,
        0.149
      ],
      "centers_positive_pct": 73.91
    },
    {
      "minimum_responses": 100,
      "centers": 41,
      "median_within_center_correlation": 0.118,
      "bootstrap_95_ci": [
        0.098,
        0.167
      ],
      "centers_positive_pct": 75.61
    }
  ],
  "quality": {
    "largest_center_share_pct": 5.83,
    "all_tenants_succeeded": true,
    "personal_identifiers_extracted": false,
    "comments_extracted": false,
    "class_identifiers_extracted": false
  },
  "limitations": [
    "El feedback es voluntario y no representa necesariamente a todas las personas que asisten.",
    "La asociación se calcula entre dos escalas ordinales y resume coincidencia, no causalidad.",
    "Valoración y esfuerzo se responden tras la misma clase, pero actividad, coach y perfil de asistentes no se aíslan.",
    "La cobertura se concentra entre agosto y diciembre de 2025 y no representa todo el mercado español."
  ]
}