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Table 3 Response rates and selected characteristics of the RUCAS sample at baseline

From: The Regeneración Urbana, Calidad de Vida y Salud - RUCAS project: a Chilean multi-methods study to evaluate the impact of urban regeneration on resident health and wellbeing

  BDM MB
Sample size and retention rates
Baseline measurement date April 2018 January 2019
Number of households at baseline 238 718
Response rate (% of households relative to participants or not reached in the previous wave)
At wave 2 87.4% 91.9%
At wave 3 80.8% 90.1%
Lost to follow-up (% of households relative to baseline)
At wave 2 12.6% 8.1%
At wave 3 23.9% 14.9%
Sociodemographics
Number of individuals 682 2448
Sex
Male 46.8% 47.2%
Female 53.2% 52.8%
Age group
0–15 26.0% 25.7%
16–25 14.7% 18.3%
26–45 28.2% 23.1%
46–65 24.4% 28.5%
66–99 6.8% 4.4%
Education level according to years of study (≥ 18 years old)
Less than 4 years 6.2% 8.7%
Between 4 and 7 years 9.9% 16.6%
Between 8 and 12 years 65.7% 65.7%
More than 12 years 18.3% 9.0%
Labor force status (≥ 15 years old)
Employed 69.0% 58.9%
Unemployed 4.3% 7.3%
Inactive 26.7% 33.8%
Dwelling (IDO tool)
Intervened dwellings (% relative to measured dwellings in each wave)
At baseline 8.4% 0.0%
At wave 2 16.7% 3.6%
At wave 3 18.8% 8.1%
Overcrowding (≥ 2.5 persons per bedroom) 11.5% 18.3%
Presence of mold in bedrooms 37.7% 34.4%
Perceived habitability (RUCAS survey)
Not satisfied with housing (overall) 34.5% 60.1%
Dwelling is perceived as “always” or “almost always” cold during winters 43.6% 71.9%
Wellbeing and health
Poor reported general health (≥ 15 years old) a 39.1% 46.2%
Report of medically diagnosed hypertension (≥ 15 years old) 22.2% 16.2%
Report of medically diagnosed diabetes (≥ 15 years old) 10.2% 8.1%
Depressive symptoms GHQ-12 (key informants only) 19.3% 37.6%
Current smokers (≥ 15 years old) 40.1% 43.0%
Problematic alcohol consumption (≥ 15 years old) b 5.8% 12.4%
No weekly outdoor leisure time (≥ 15 years old) c 45.6% 42.2%
Excessive screen time on weekends (≤ 15 years old) d 59.4% 73.5%
Acute respiratory illness (preceding month)
At baseline (summer) 13.2% 12.2%
At wave 2 (winter) 17.5% 24.2%
Gastrointestinal symptoms (preceding month)
At baseline (summer) 15.0% 17.5%
At wave 2 (winter) 13.9% 16.9%
  1. aGeneral health was measured through a single question with seven response categories, ranging from “very bad” (1) to “very good” (7); responses lower than “good” (6) are classified as “poor”
  2. bAUDIT-dimension 1 was used, with hazardous drinking defined as ≥8 points [54]
  3. cOutdoor leisure time of at least 30 min
  4. d > 0 h for children under 2 years old, daily screen time; > 1 h for children 2-5 years old, daily screen time; > 2 h for children older than five, daily screen time [53]