Fig 1.
Correlation matrix including cancer incidences, malpractice payout rate, and cancer risk factors.
Correlations are represented as colored circles, blue indicating positive correlation, and red indicating negative correlation. Larger circle size and greater color intensity indicate higher correlation coefficient (see color key). Blank space indicates the correlation was not statistically significant (Spearman correlation with Bonferroni correction, P < 0.05 considered significant). The complete correlation matrix is presented in S1 Table.
Table 1.
Variation in cancer incidence among states.
Table 2.
Variation in cancer risk factors among states.
Fig 2.
Thyroid cancer incidence versus malpractice payout rate.
Values are average for each state from all years under study. States with higher malpractice payout rate had higher incidence of thyroid cancer (r = 0.51, P = 0.009, Spearman).
Table 3.
Multivariate models for all cancer types.