Table 1 Interactive q-statistic values (>0.6) between pairs of risk factors.

From: Ecological analysis of Kashin-Beck osteoarthropathy risk factors in Tibet’s Qamdo City, China

C = A ∩ B A B D = A + B Result Interaction
TEC ∩ MI = 0.777 0.560 0.334 0.894 C < D; C > Max(A,B)
MI ∩ GDP = 0.760 0.334 0.314 0.648 C > D; C > Max(A,B) ↑↑
TEC ∩ STR = 0.731 0.560 0.467 1.027 C < D; C > Max(A,B)
STR ∩ GDP = 0.710 0.467 0.314 0.781 C < D; C > Max(A,B)
MI ∩ PRE = 0.689 0.334 0.294 0.628 C > D; C > Max(A,B) ↑↑
STR ∩ MI = 0.682 0.467 0.334 0.801 C < D; C > Max(A,B)
STR ∩ PRE = 0.679 0.467 0.294 0.761 C < D; C > Max(A,B)
TEC ∩ PRE = 0.674 0.560 0.294 0.854 C < D; C > Max(A,B)
TEC ∩ GDP = 0.673 0.560 0.314 0.874 C < D; C > Max(A,B)
TEC ∩ TEM = 0.640 0.560 0.051 0.611 C > D; C > Max(A,B) ↑↑
GDP ∩ PRE = 0.628 0.314 0.294 0.608 C > D; C > Max(A,B) ↑↑
TEC ∩ SOI = 0.614 0.560 0.117 0.677 C < D; C > Max(A,B)
  1. “↑”Denotes the bivariate enhancement of A and B; “↑↑”denotes the nonlinear enhancement of A and B. The risk factors include the following: TEC, STR, MI, GDP, PRE, SOI and TEM.