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Table 6 Descriptive statistics of variables (Mean ± SD) used in evaluating the knowledge and uses of wild yams and medicinal plants of the Mahafaly region in SW-Madagascar

From: Effects of socio-economic household characteristics on traditional knowledge and usage of wild yams and medicinal plants in the Mahafaly region of south-western Madagascar

Variables Ampotake (n = 50) Andremba (n = 50) Itomboina (n = 50) Miarintsoa (n = 50) Efoetse (n = 50)
Collection of wild yams (%):      
D. alatipes 92.16 80.3 80 42 0
D. bemandry 94.12 51.52 80 87.23 0
D. fandra 54.9 60.61 60 59.57 0
D. ovinala 76.47 62.12 64.44 46.81 0
D. nako 43.14 21.21 66.67 48.94 0
D. soso 7.84 39.39 46.67 21.28 0
Number of wild yams species collected 3.9 ± 1.1 3.9 ± 1.3 4.2 ± 1.4 4.9 ± 1.9 0
Frequency of wild yams collection1) 9.8 ± 5.7 5.1 ± 2.5 5.6 ± 2.9 5.7 ± 3.9 0
Period of collection (months/year) 5.7 ± 1.9 4.1 ± 1.9 4.2 ± 1.4 4.9 ± 1.9 0
Wild yams harvested2) 21 ± 9 12.8 ± 5.8 14.1 ± 5.6 13.1 ± 7.6 0
Unsustainable harvest technique (%) 89.6 81.5 89.5 78.6 -
Sustainable harvest technique (%) 10.4 18.5 10.5 21.4 -
Monthly income, from wild yams (US$)3) 5.5 ± 7.4 1.3 ± 3.5 2.0 ± 3.0 1.3 ± 2.5 0
Number of medicinal species used 43.5 ± 12 29.8 ± 11.8 36.6 ± 10 27.4 ± 12.4 18.4 ± 9.7
Diversity of medicinal plant use 33.5 ± 10.3 23.9 ± 8.6 32.2 ± 7.7 23.4 ± 10.2 14.7 ± 7.7
Number of medicinal uses 17.6 ± 3.1 14.4 ± 3.2 16.7 ± 1.9 12.6 ± 3.3 12.8 ± 4.6
  1. 1)Times per month; 2)Number of harvest holes per collection event; 3)US$ = 2422 Ariary, 9.07.2014.