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Table 5 Results of two step cluster and discriminant analysis of 250 interviewed rural households in the Mahafaly Region of 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

Selected variables Cluster group Discriminant analysis
  Well-off farmers Less well-off farmers  
Mean ± SD Mean ± SD* Wilks’ Lambda Sig Structure coefficients
Education level 1.03 ± 0.71 0.86 ± 0.69 0.986 0.068 0.116
Agricultural harvest 1.23 ± 0.42 0.52 ± 0.63 0.747 0.000** 0.574
Households activities 1.11 ± 0.71 0.26 ± 0.44 0.928 0.000** 0.274
Family size 7.35 ± 3.55 6.4 ± 3.20 0.982 0.037* 0.133
Tropical livestock unit 1) 12.53 ± 12.32 2.18 ± 5.40 0.746 0.000** 0.577
Agricultural area 2.86 ± 2.30 1.19 ± 1.60 0.945 0.000** 0.239
Medicinal plants used 27.77 ± 13.55 32.7 ± 14.30 0.974 0.011* −0.162
Number of medicinal uses 13.87 ± 4.27 15.6 ± 3.60 0.976 0.016* −0.153
Diversity of medicinal plant use 23.35 ± 2.12 25.92 ± 2.10 0.988 0.089 −0.108
Wild yam species collected 2.23 ± 2.71 3.17 ± 2.17 0.960 0.002** −0.201
Yam tubers harvested per collection event 2) 6.72 ± 6.74 13.02 ± 10.33 0.908 0.000** −0.314
Frequency of collection 2.35 ± 2.71 5.83 ± 5.23 0.886 0.000** −0.354
Sale 3.95 ± 11.09 17.03 ± 24.12 0.920 0.000** −0.291
Collection period 2.40 ± 2.29 13.78 ± 2.79 0.943 0.000** −0.243
Use of wild yams 1.73 ± 0.44 1.49 ± 0.50 0.948 0.000** 0.231
    Eigen Value = 1.026
    Percentage variance = 50.41
  1. 1)[38]2)Number of harvest holes per collection event, *significance level at p ≤ 0.05, **significance level at p ≤ 0.01.