Table 4.1
|
(parameter) markets
|
Numbers of
vegetable tested |
No. of positive
samples (%) prevalence |
No. of negative
samples(%) prevalence |
Prevalence (%)
|
Chi-sqaure(X2)
|
Table value
|
Critical value
|
|
Agbarho
|
5
|
2(40%)
|
3(60%)
|
2(8%)
|
0.967
|
9.49
|
P value< 0.05 =
9.49 |
|
Agbarha
|
5
|
2(40%)
|
3(60%)
|
2(8%)
|
|||
|
Orogun
|
5
|
2(40%)
|
3(60%)
|
2(8%)
|
|||
|
Ughelli
|
5
|
3)60%)
|
2(40%)
|
3(12%)
|
|||
|
Ofuoma
|
5
|
3(60%)
|
2(40%)
|
3(12%)
|
|||
|
Total
|
25
|
12(48%)
|
13(52%)
|
12(48%)
|
The calculated chi-square is 0.967 and table value is 9.49 at 0.05 level
of significant (see appendix iv for detailed working table) since the
calculated value is greater than (>) table value hence the research is
insignificant.
of significant (see appendix iv for detailed working table) since the
calculated value is greater than (>) table value hence the research is
insignificant.
Overall prevalence of parasitic contamination on
different vegetables
different vegetables
|
(parameter)
Vegetables |
No. tested
|
No. of positive(%)
prevalence |
No. of negative (%)
prevalence |
Prevalence (%)
|
|
(1) Bitterleaf
|
5
|
2(40%)
|
3(60%)
|
2(8%)
|
|
(2) Tomato
|
5
|
3(60%)
|
3(60%)
|
3(12%)
|
|
(3) Okra
|
5
|
2(40%)
|
3(60%)
|
2(8%)
|
|
(4) Waterleaf
|
5
|
3(60%)
|
1(20%)
|
3(12%)
|
|
(5) Pumpkin
|
5
|
2(30%)
|
4(80%)
|
2(8%)
|
Table 4.3 overall prevalence of helminthes
parasitic in Ughelli-metropolis in study
parasitic in Ughelli-metropolis in study
|
No. of total
samples tested |
No. of positive
samples prevalence |
No. of
negative sample prevalence |
Prevalence (%)
|
|
25
|
7(28%)
|
18(68%)
|
7(28%)
|
See table 4.4
Out of 25 vegetable samples examined, 7(28%) were positive while 18(72%)
were negative in all the five selected markets in Ughelli-metropolis thus,
Ughelli-Metropolis. Thus, Ughelli-Metropolis has an overall prevalence of 28%
helminths. Tables (3.2)
were negative in all the five selected markets in Ughelli-metropolis thus,
Ughelli-Metropolis. Thus, Ughelli-Metropolis has an overall prevalence of 28%
helminths. Tables (3.2)
4.4 Chi-square
|
X2
(Mean) |
(O) Observed
|
(E) Expected
|
Critical
|
Table value
|
|
|
1.1 0.62
= |
0.36 = 0.15
|
|
P value<0.05 =
9.49 |
|
|
1.2 -0.62
= |
0.36 = 0.14
|
|
P value<0.05 =
9.49 |
|
|
2.1 0.62
= |
0.36 = 0.15
|
|
P value<0.05 =
9.49 |
|
|
2.2 -0.62
= |
0.36 = 0.14
|
|
P value<0.05 =
9.49 |
|
|
3.1 -0.42
= |
0.16 = 0.07
|
|
P value<0.05 =
9.49 |
|
|
3.2 0.42
= |
0.16 = 0.07
|
|
|