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Table 4 Inter-individual variability in hourly urinary flow and creatinine excretion rates calculated from nocturnal urine collections

From: Concentrations versus amounts of biomarkers in urine: a comparison of approaches to assess pyrethroid exposure

  Urinary flow rate Creatinine excretion rate
  Mean
(mL/h)
Range
(Min-Max)
(mL/h)
Percentiles (5–95th)
(mL/h)
Max
Min
CVa
%
Mean
(mL/h)
Range
(Min-Max)
(mL/h)
Percentiles (5–95th)
(mL/h)
Max
Min
CVa
%
Adults           
Urban
(n = 74)
59.8 7.21–133 21.8–113 18 47.1 0.049 0.016–0.10 0.019–0.084 6.7 36.4
Rural
(n = 109)
63.4 20.6–127 29.7–108 6.2 38.7 0.062 0.020–0.14 0.034–0.10 7.1 35.6
Both
(n = 183)
62.0 7.21–133 26.4–112 18 42.1 0.057 0.016–0.14 0.029–0.095 9.2 37.4
Children           
Urban
(n = 74)
32.0 10.7–69.5 13.4–61.9 6.5 48.0 0.027 0.011–0.082 0.014–0.045 7.7 42.1
Rural
(n = 42)
26.6 10.8–64.6 14.3–48.7 6.0 45.9 0.025 0.0071–0.065 0.013–0.042 9.1 44.6
Both
(n = 116)
30.1 10.7–69.5 13.6–61.4 6.5 48.2 0.026 0.0071–0.082 0.014–0.045 12 43.1
  1. aCV = coefficient of variation (standard deviation/mean × 100%)