{
  "report_id": "061-diversity-continuity",
  "status": "validated",
  "version": "1.0",
  "publication": {
    "headline": "Una agenda más diversa no coincide con una base activa más continua",
    "canonical_url": "https://wodbuster.com/observatorio/diversidad-continuidad-centros-deportivos/",
    "date_modified": "2026-07-18"
  },
  "period": {"start": "2025-01-01", "end": "2025-12-31"},
  "sample": {"matched_centers": 1782},
  "definitions": {
    "effective_diversity": "Número equivalente de actividades si todas aportaran el mismo volumen de clases; disminuye cuando pocas dominan la agenda.",
    "material_activity": "Tipo con al menos 50 clases y 100 reservas durante 2025.",
    "observed_continuity": "Parte de los participantes activos de Q1 observada también en Q4.",
    "adjustment": "Cuartiles de diversidad calculados dentro de cada combinación de tamaño activo y cuartil de frecuencia mensual."
  },
  "findings": {
    "low_diversity_effective_activities": 1.19,
    "high_diversity_effective_activities": 5.40,
    "low_diversity_material_activities": 2.0,
    "high_diversity_material_activities": 8.0,
    "low_diversity_q1_seen_again_q4_pct": 63.57,
    "high_diversity_q1_seen_again_q4_pct": 58.90,
    "continuity_difference_pp": -4.67,
    "low_diversity_q4_not_active_q1_pct": 39.72,
    "high_diversity_q4_not_active_q1_pct": 43.98,
    "q4_replacement_difference_pp": 4.26,
    "growth_difference_pp": -0.31
  },
  "series": {
    "size_frequency_adjusted_quartiles": [
      {"group":"Diversidad baja","centers":450,"effective_activities":1.19,"material_activities":2.0,"top3_class_share_pct":100.00,"typical_active":149.00,"visits_per_active":8.34,"q1_seen_again_q4_pct":63.57,"q4_not_active_q1_pct":39.72,"q4_vs_q1_change_pct":4.14},
      {"group":"Media-baja","centers":444,"effective_activities":2.24,"material_activities":4.0,"top3_class_share_pct":95.62,"typical_active":144.00,"visits_per_active":8.47,"q1_seen_again_q4_pct":61.55,"q4_not_active_q1_pct":41.49,"q4_vs_q1_change_pct":4.38},
      {"group":"Media-alta","centers":444,"effective_activities":3.22,"material_activities":5.0,"top3_class_share_pct":86.12,"typical_active":147.00,"visits_per_active":8.44,"q1_seen_again_q4_pct":60.29,"q4_not_active_q1_pct":43.28,"q4_vs_q1_change_pct":5.26},
      {"group":"Diversidad alta","centers":444,"effective_activities":5.40,"material_activities":8.0,"top3_class_share_pct":65.41,"typical_active":146.75,"visits_per_active":8.32,"q1_seen_again_q4_pct":58.90,"q4_not_active_q1_pct":43.98,"q4_vs_q1_change_pct":3.83}
    ],
    "size_only_adjusted_continuity_pct": [63.43,61.49,60.74,58.72]
  },
  "quality": {
    "minimum_classes_per_center": 100,
    "minimum_reservations_per_center": 500,
    "minimum_classes_per_material_activity": 50,
    "minimum_reservations_per_material_activity": 100,
    "maximum_largest_center_q4_share_pct": 2.22
  },
  "privacy": {"activity_names_exported": false, "personal_identifiers_joined": false, "center_identifiers_exported": false},
  "limitations": [
    "Los tipos se cuentan dentro de cada centro y sus nombres no se homologan entre negocios.",
    "La asociación no demuestra que ampliar o reducir el catálogo cause cambios de continuidad.",
    "Diversidad no mide calidad, complementariedad, rentabilidad ni adecuación de las actividades.",
    "Disciplina, modelo de acceso, especialización y antigüedad pueden explicar parte del resultado.",
    "La muestra representa centros usuarios de WodBuster y no todo el mercado español."
  ]
}