Exposure of Petrol Station Attendants and Auto Mechanics to Premium Motor Sprit Fumes in Calabar, Nigeria

Table 2

Mean methaemoglobin (MetHb) and pack cell volume (PCV) values among Automobile Mechanics (AM) and Petrol Station Attendants (PSA) according to self-reported duration of exposure to Petrol (PMS) fumes.

		Duration of self-reported exposure to Petrol (PMS) fumes
Automobile mechanics (AM)		<1 yr (𝑛=8)	1-2 yrs (𝑛=9)	3-4 yrs (𝑛=10)	5-6 yrs (𝑛=8)	7-8 yrs (𝑛=6)	9-10 yrs (𝑛=5)	>10 yrs (𝑛=4)
	MetHb (%)	2.1	2.6	8.7	9.1	10.1	11.7	15.0
	PCV (%)	41.8	41.4	32.5	30.3	30.0	28.6	24.4
Petrol station attendants (PSA)		<1 yr (𝑛=11)	1-2 yrs (𝑛=13)	3-4 yrs (𝑛=7)	5-6 yrs (𝑛=9)	7-8 yrs (𝑛=5)	9-10 yrs (𝑛=3)	>10 yrs (𝑛=2)
	MetHb (%)	1.8	2.5	7.2	7.8	8.7	10.8	13.6
	PCV (%)	40.4	40.2	35.0	35.0	32.0	30.0	28.0