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Table 3 Levels of urinary δ-ALA by age group

From: Lead exposure study among workers in lead acid battery repair units of transport service enterprises, Addis Ababa, Ethiopia: a cross-sectional study

Age

δ-ALA (μg/ml) ± SEM

 

Non-Exposed

Exposed

20–35

7.3 ± 2.2

6.1 ± 2.2***

36–45

6.7 ± 1.2

12.4 ± 3.2***

46+

6.8 ± 1.4

21.7 ± 2.5***

  1. Urinary ALA levels determined as described in the legend of Fig. 1 were compared between similar age groups of exposed and non-exposed subjects. Data were analyzed using F-ANOVA. ***P < 0.001.