Paraquat in Surface Water of Some Streams in Mai Chau Province, the Northern Vietnam: Concentrations, Profiles, and Human Risk Assessments

Table 2

Characteristics of residents living in the studied areas in Mai Chau province.

Characteristics	Number	Percentage (%)
Sex
Male	19	31.67
Female	41	68.33
Age (years)
<40	29	48.33
41–50	22	36.67
51–60	5	8.33
61–70	3	5.00
>70	1	1.67
Weight (kg)
<40	5	8.30
41–50	13	21.70
51–60	22	36.70
61–70	18	30.00
>70	2	3.30
Hours (used the stream water) per day
0.5	20	33.30
1	37	61.70
2	1	1.70
3	2	3.30
Days (used the stream water) per week
3	1	1.70
4	7	11.70
5	3	5.00
6	17	28.30
7	32	53.30
Exposure to paraquat (year(s))
None	3	5.00
1	5	8.30
2	18	30.00
3	32	53.30
4	1	1.70
5	1	1.70