. 2020 Apr 16;17(8):2753. doi: 10.3390/ijerph17082753

Table 2.

Production indicators and inclusion criteria.

Configuration	Values
Analysis unit	Keywords authors, keywords WoS
Frequency threshold	Keywords: P₁ = (5), P₂ = (7), P₃ = (7), P₄ = (7)
Frequency threshold	Authors: P_X = (10)
Network type	Co-occurrence
Co-occurrence union value threshold	Keywords: P₁ = (2), P₂ = (4), P₃ = (5), P₄ = (5)
Co-occurrence union value threshold	Authors: P_X = (6)
Normalization measure	Equivalence index
Clustering algorithm	Maximum size: 9; minimum size: 3
Evolutionary measure	Jaccard index
Overlapping measure	Inclusion rate