|
Column A
|
B
|
C
|
D
|
E
|
|---|
|
Subgroups of artisanal small-scale gold (ASG) miners
|
Sample prevalence of chronic mercury intoxication in ASG miners*
|
Main analysis: Numbers and percentages**of ASG miners assumed for Zimbabwe
|
Sources of numbers and percentages marked in bold in column C
|
Scenario analysis: numbers and percentage distribution assumed for Zimbabwe (scenario range)
|
|---|
|
Min.
|
Source
|
Max.
|
Source
|
|---|
|
Total (T)
|
72%
|
(131/181)
|
350,000
|
100%
|
[8, 9, 50, 51]
|
No variation
|
500,000
|
[54, 55]
|
|
Adults (A)’
|
72%
|
(118/164)
|
297,500
|
85% of T
|
GMP 2004
|
No variation
|
98% of T
|
[14]
|
|
Males (M)
|
90%
|
(95/106)
|
208,250
|
70% of A
|
Mid-value of reported data***
|
50% of A
|
[8, 9, 50]
|
89% of A
|
[52, 53]
|
|
15-24
|
91%
|
(41/45)
|
74,350
|
36% of M
|
GMP 2004 cross-checked against Mtetwa and Shava [52]
|
No variation
|
|
25-34
|
88%
|
(35/40)
|
86,000
|
41% of M
|
|
35-41
|
90%
|
(19/21)
|
21,450
|
10% of M
|
|
42+
|
26,450
|
13% of M
|
|
Females (F)
|
40%
|
(23/58)
|
89,250
|
30% of A
|
Mid-value of reported data***
|
11% of A
|
[52, 53]
|
50% of A
|
[8, 9, 50]
|
|
15-24
|
26%
|
(7/27)
|
31,860
|
36% of F
|
GMP 2004 cross-checked against Mtetwa and Shava [52]
|
No variation
|
|
25-34
|
52%
|
(16/31)
|
36,860
|
41% of F
|
|
35-41
|
9,190
|
10% of F
|
|
42+
|
11,340
|
13% of F
|
|
Children”
|
76%
|
(13/17)
|
52,500
|
15% of T
|
GMP 2004
|
2% of T
|
[14]
|
No variation
|
|
Male (M)
|
38,500
|
11% of T
|
|
Female (F)
|
14,000
|
4% of T
|
-
*The data were taken from the Global Mercury Project (GMP), conducted by UNIDO in Zimbabwe in 2004 [5, 12], and from a health and biomonitoring project focusing on women of child-bearing age and their infants, conducted in Zimbabwe in 2006 by the University of Munich (LMU; Germany) [48]. The sample prevalence of the control group is 0%. The sample prevalence (in %) in every subgroup is determined using Formula 1, Table 1. The number of intoxicated and the subgroup size are shown between parentheses.
-
**Numbers and percentages are rounded and include uncertainties because their distribution was derived using the estimates given in the sources in column D.
-
***References consulted with estimates for Zimbabwe [8, 9, 50, 52, 53] cross-checked against the GMP 2004.
-
‘Adults: individuals 15 years and older.
-
”Children: individuals aged 9–14; children aged 0–8 were not assumed to be occupationally exposed.
- A: adults; F: females; GMP 2004: own analysis using data from the Global Mercury Project 2004 for Zimbabwe; M: males; Max.: maximum; Min.: minimum; T: total.
