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2.1. Study area

study was carried out in Ogun State. The State is mainly dominated by Yoruba
ethnic group and is the largest ethnic group in West African coast and one of
the largest and longest established ethnic groups in African continent (Ayinde,
2005). The total population of this area is approximately 3,658,098, covered an
area of 16,762km2, the density per km2 of 222, with
twenty (20) Local Government Areas (National Bureau of Statistics. 2008). The
study area is the humid tropical zones with the major part being in the fresh-water
swamp forest and rain forest to the south. The rainforest gradually gives way
to the woodland savannah towards the north. It has a land area of about
114,271km2 which is about 12% of the total land mass of Nigeria,
lying between Latitude 40211N and 90231N
of the equator and Longitude of 20251E and 60311E
(NPC, 2006). The three (3) main agro-ecological zones in Southwest Nigeria are
the swamp on the Atlantic coast, tropical rainforest in the middle and guinea
savannah in the north.

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The study area
experiences both dry and rainy season and it commences from March to October
while dry season commences from November to February. The state is
characterized by an annual rainfall of about 2,000mm – 2,500mm and high
humidity of 80% – 95% at rainy season and 60% or less at dry season. The soil
type in the zone is well drained but highly leached soils. These elements
favour the cultivation of crops such as cassava, maize, sorghum, yam, rice,
cocoyam and beans. The major languages speak in the study area are Yoruba,
Ijebu and Egba Languages while the major occupation of the people are fishing
and traditional healer or herbal trading. The study area was purposively chosen
due to high concentration of fishermen and traditional healers with exertion to
rescue people from untimely death and illness.

2.2. Sampling
technique: A total of 80 respondents from two Local Government Areas were
selected using a multi-stage sampled technique, and a well structured
questionnaire was used to elicit information for this study. Data were
collected on demographic characteristics of the respondents such as age,
marital status, educational level, sex, household size, membership of social
association, awareness of the utilization of freshwater fish for
trado-medicine. Information was also collected on the types of freshwater fish
species used for trado-medicine and health care services, factors influencing
the utilization of freshwater fish for trado-medicine and the effect of the
utilization on the demographic characteristics of the respondents.

2.3. Methods of
data analysis: Data were analyzed with the use of descriptive statistics
such as frequencies distribution, mean and percentage to describe the demographic
characteristic and the type of freshwater fish species used for trado-medicine
and other usage. Relative Important Index was used to rank the factors influencing
the utilization of freshwater fish for trado-medicine and health care services based
on their importance indices. Simple regression analysis was used to assess the
effects of the utilization of freshwater fish for trado-medicine on the
demographic characteristic of the respondents in the study area.

Relative Important Index: This aids in finding the contribution
that a particular variable makes to the prediction of a criterion variable both
by itself and in combination with other variables. The mean
score for the factors influencing the utilization of fresh-water fish species
for trado-medicine and health care services were collected
in a 3– point continuum scale of Agree (A), Undecided (U) and Disagree (D) and
were assigned scores 3, 2 and 1 respectively. The results were calculated as
weighted score for each of the factors influencing the utilization of
fresh-water fish species.

Important Index (RII) = ?W/AN

RII = Sum of Weights (W1+W2+—-WN) / A x N


A = Highest weight
assigned to the scale i.e 3 in this case.

W = Weights assigned to
each factor by the respondents and it ranges from 1 to 3 where ‘1’ is less
important and ‘3’ is extremely important

N = Total number of
respondents (i.e. 80).

Weighted score = No of A x 3 + No of U x 2 +
No of D x 1

                                                Total No of A + U + D

weighted score below two was considered as not important and vice versa

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