{
  "report_id": "106-individual-frequency",
  "status": "validated",
  "version": "1.0",
  "publication": {
    "headline": "Ocho visitas mensuales coinciden con 5,4 puntos más de vuelta que cuatro, incluso con la misma distribución",
    "canonical_url": "https://wodbuster.com/observatorio/frecuencia-mensual-vuelta/",
    "date_modified": "2026-07-18"
  },
  "period": "2025-01-01/2025-11-30",
  "definition": {
    "participant_month": "Mes natural con al menos una asistencia.",
    "four_visits": "Mes con exactamente cuatro asistencias.",
    "eight_visits": "Mes con exactamente ocho asistencias.",
    "next_month_return": "Al menos una asistencia en el mes natural siguiente.",
    "strict_adjustment": "Mismo centro, mes, intervalo temporal y número de tramos semanales activos; después cada centro pesa una vez."
  },
  "rules": {
    "minimum_participant_months_per_center": 100,
    "minimum_valid_cells_per_center": 3,
    "primary_minimum_per_frequency_group": 5
  },
  "sample": {
    "tenants_attempted": 2174,
    "tenants_succeeded": 2174,
    "tenants_failed": 0,
    "centers_with_activity": 2159,
    "participant_months": 3519632,
    "eligible_centers": 2128
  },
  "center_balanced_curve": [
    {
      "monthly_attendances": 1,
      "centers": 1859,
      "participant_months": 248980,
      "median_center_return_pct": 46.3
    },
    {
      "monthly_attendances": 2,
      "centers": 1834,
      "participant_months": 192265,
      "median_center_return_pct": 59.8
    },
    {
      "monthly_attendances": 3,
      "centers": 1893,
      "participant_months": 199408,
      "median_center_return_pct": 68.75
    },
    {
      "monthly_attendances": 4,
      "centers": 1944,
      "participant_months": 238741,
      "median_center_return_pct": 75.71
    },
    {
      "monthly_attendances": 5,
      "centers": 1911,
      "participant_months": 219800,
      "median_center_return_pct": 80.2
    },
    {
      "monthly_attendances": 6,
      "centers": 1908,
      "participant_months": 236848,
      "median_center_return_pct": 84.22
    },
    {
      "monthly_attendances": 7,
      "centers": 1935,
      "participant_months": 271175,
      "median_center_return_pct": 88.16
    },
    {
      "monthly_attendances": 8,
      "centers": 1973,
      "participant_months": 340767,
      "median_center_return_pct": 91.18
    },
    {
      "monthly_attendances": 9,
      "centers": 1847,
      "participant_months": 255928,
      "median_center_return_pct": 92.17
    },
    {
      "monthly_attendances": 10,
      "centers": 1647,
      "participant_months": 182750,
      "median_center_return_pct": 93.02
    },
    {
      "monthly_attendances": 11,
      "centers": 1524,
      "participant_months": 161821,
      "median_center_return_pct": 94.54
    },
    {
      "monthly_attendances": 12,
      "centers": 1534,
      "participant_months": 177482,
      "median_center_return_pct": 95.89
    }
  ],
  "primary": {
    "low": 4,
    "high": 8,
    "minimum": 5,
    "control": "month_span_weeks",
    "centers": 531,
    "median_high_minus_low_pp": 5.4,
    "bootstrap_95_ci": [
      4.88,
      6.1
    ],
    "centers_high_higher_pct": 82.11,
    "median_valid_cells": 6
  },
  "controls_4_vs_8": [
    {
      "low": 4,
      "high": 8,
      "minimum": 5,
      "control": "month",
      "centers": 1739,
      "median_high_minus_low_pp": 14.8,
      "bootstrap_95_ci": [
        14.33,
        15.34
      ],
      "centers_high_higher_pct": 98.04,
      "median_valid_cells": 10
    },
    {
      "low": 4,
      "high": 8,
      "minimum": 5,
      "control": "month_span",
      "centers": 1292,
      "median_high_minus_low_pp": 9.81,
      "bootstrap_95_ci": [
        9.42,
        10.27
      ],
      "centers_high_higher_pct": 94.27,
      "median_valid_cells": 7.0
    },
    {
      "low": 4,
      "high": 8,
      "minimum": 5,
      "control": "month_span_weeks",
      "centers": 531,
      "median_high_minus_low_pp": 5.4,
      "bootstrap_95_ci": [
        4.88,
        6.1
      ],
      "centers_high_higher_pct": 82.11,
      "median_valid_cells": 6
    }
  ],
  "strict_sensitivities_4_vs_8": [
    {
      "low": 4,
      "high": 8,
      "minimum": 3,
      "control": "month_span_weeks",
      "centers": 1147,
      "median_high_minus_low_pp": 6.62,
      "bootstrap_95_ci": [
        6.09,
        7.16
      ],
      "centers_high_higher_pct": 82.3,
      "median_valid_cells": 7
    },
    {
      "low": 4,
      "high": 8,
      "minimum": 5,
      "control": "month_span_weeks",
      "centers": 531,
      "median_high_minus_low_pp": 5.4,
      "bootstrap_95_ci": [
        4.88,
        6.1
      ],
      "centers_high_higher_pct": 82.11,
      "median_valid_cells": 6
    },
    {
      "low": 4,
      "high": 8,
      "minimum": 10,
      "control": "month_span_weeks",
      "centers": 136,
      "median_high_minus_low_pp": 5.0,
      "bootstrap_95_ci": [
        4.24,
        5.83
      ],
      "centers_high_higher_pct": 86.76,
      "median_valid_cells": 6.0
    }
  ],
  "paired_comparisons": [
    {
      "low": 2,
      "high": 4,
      "minimum": 5,
      "control": "month_span",
      "centers": 1062,
      "median_high_minus_low_pp": 10.93,
      "bootstrap_95_ci": [
        10.14,
        11.78
      ],
      "centers_high_higher_pct": 86.25,
      "median_valid_cells": 6.0
    },
    {
      "low": 4,
      "high": 6,
      "minimum": 5,
      "control": "month_span",
      "centers": 1254,
      "median_high_minus_low_pp": 4.96,
      "bootstrap_95_ci": [
        4.44,
        5.39
      ],
      "centers_high_higher_pct": 78.31,
      "median_valid_cells": 8.0
    },
    {
      "low": 4,
      "high": 8,
      "minimum": 5,
      "control": "month_span",
      "centers": 1292,
      "median_high_minus_low_pp": 9.81,
      "bootstrap_95_ci": [
        9.42,
        10.27
      ],
      "centers_high_higher_pct": 94.27,
      "median_valid_cells": 7.0
    },
    {
      "low": 6,
      "high": 8,
      "minimum": 5,
      "control": "month_span",
      "centers": 1701,
      "median_high_minus_low_pp": 5.38,
      "bootstrap_95_ci": [
        5.05,
        5.67
      ],
      "centers_high_higher_pct": 87.65,
      "median_valid_cells": 9
    },
    {
      "low": 8,
      "high": 10,
      "minimum": 5,
      "control": "month_span",
      "centers": 1521,
      "median_high_minus_low_pp": 2.17,
      "bootstrap_95_ci": [
        1.93,
        2.32
      ],
      "centers_high_higher_pct": 72.58,
      "median_valid_cells": 9
    },
    {
      "low": 8,
      "high": 12,
      "minimum": 5,
      "control": "month_span",
      "centers": 1429,
      "median_high_minus_low_pp": 4.35,
      "bootstrap_95_ci": [
        4.15,
        4.57
      ],
      "centers_high_higher_pct": 89.22,
      "median_valid_cells": 10
    }
  ],
  "quality": {
    "largest_center_share_pct": 0.55,
    "all_tenants_succeeded": true,
    "personal_identifiers_extracted": false,
    "class_identifiers_extracted": false,
    "each_center_weights_once": true
  },
  "limitations": [
    "La frecuencia puede reflejar motivación, disponibilidad, salud o hábitos previos; no demuestra causalidad.",
    "El ajuste iguala centro, mes y dos medidas agregadas de distribución, pero no edad, antigüedad, tarifa o actividad.",
    "Cuatro y ocho visitas son referencias observadas, no objetivos universales ni una prescripción.",
    "Volver al mes siguiente no equivale a mantener una cuota ni a permanencia de largo plazo."
  ]
}