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Table 2 Indices of knowledge and uses calculated for P. biglobosa.

From: Ethnic differences in use values and use patterns of Parkia biglobosa in Northern Benin

Index Calculation Description Reference
Interviewee diversity value (ID)
ID = Ux/Ut
ID, number of uses-citations by a given interviewee (Ux) divided by the total number of uses (Ut) Measures how many interviewees used Parkia biglobosa and how its uses are distributed among the interviewees [17]
Interviewee equitability value (IE)
IE = ID/IDmax
IE, interviewee diversity value (ID) divided by this index's maximum value (IDmax) Measures the degree of homogeneity of the interviewee's knowledge [17]
Consensus value for plant parts (CPP)
CPP = Px/Pt
CPP, number of times a given plant part was cited (Px) divided by the total number of citations of all parts (Pt) Measures the degree of agreement among interviewees concerning the plant part used [18]
Use diversity value (UD)
UD = Ucx/Uct
UD, number of indications recorded by category (Ucx) divided by the total number of indications for all categories (Uct) Measures the importance of the use categories and how they contribute to the total value of uses [17]
Use equitability value (UE)
UE = UD/UDmax
UE, use-diversity value (UD) divided by the index's maximum value (UDmax) Measures the degree of homogeneity of knowledge about use categories [17]
Consensus value for the form of use (CMU)
CMU = Mx/Mt
CMU, number of citations for a given form of use (Mx) divided by the total number of citations for all forms (Mt) Measures the degree of agreement among interviewees concerning the form of use of Parkia biglobosa [18]