Table 1 Demographic characteristics of baseline population by sex

Age (yrs), mean ± SD

23 ± 3.7

23.3 ± 3.7

23.6 ± 3.5

Years of school, mean ± SD

6.4 ± 3.4

6.2 ± 3.4

7.1 ± 3.0

Household income per month (Córdobas), mean ± SD

7426 ± 5333

7744 ± 5531

6462 ± 4578

Number of family members, median (IQR)

4 (3–6)

4 (3–6)

4 (3–5)

Body mass index (BMI), median (IQR)

22.7 (21.0–29.9)

22.3 (20.8–24.1)

24.4 (21.8–30.0)

Systolic blood pressure (mmHg), median (IQR)

118 (109–124)

120 (111–126)

109 (103–119)

Diastolic blood pressure (mmHg), median (IQR)

68 (63–74)

69 (63–75)

68 (63–72)

Heart rate, median (IQR)

71 (65–78)

69 (64–76)

77 (71–83)

eGFR mL/min/1.73 m², median (IQR)

128 (121–137)

128 (120–137)

128 (123–136)

Ever smoked, # (%)

144 (41.1)

142 (53.0)

2 (2.3)

Ever drank alcohol, # (%)

194 (55.4)

181 (68.8)

13 (14.9)

NSAIDs^a, # (%)

296 (84.6)

217 (82.5)

79 (90.8)

Urinary tract infection, # (%)

91 (26.0)

56 (21.3)

35 (40.2)

Nephrotoxic antibiotics^b, # (%)

49 (14.0)

33 (12.5)

16 (18.4)