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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]