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Table 11 Age, number of species and number of uses mentioned by women of Zaragoza, Nuevo León and the Spearman’s rank correlation coefficient ( r s )

From: Medicinal plants in the southern region of the State of Nuevo León, México

Age Number of species Number of uses
46 20 23
57 18 20
58 17 19
60 11 11
63 19 23
63 12 13
63 16 23
65 3 6
65 6 9
65 13 13
67 9 12
74 19 22
76 23 30
  r s = 0.87, α = 0.05 r s = 0.88, α = 0.05