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Table 4 Impact of geographical scale on parameters of the joinpoint regression models and detection of racial disparities.

From: Geographical, temporal and racial disparities in late-stage prostate cancer incidence across Florida: A multiscale joinpoint regression analysis

Geographical AAPC Onset year Racial disparities
Units WM BM WM BM Ho : Parallel Brr' statistic
State       
Florida -3.9 -4.4 1989 1988 NR 2
Metro vs Nonmetro       
Urban counties -4.0 -4.3 1989 1988 NR 1
Rural counties -3.6 -5.1 1982 1982 NR 12
Counties       
Miami-Dade -5.2 -6.4 1982 1986 R 2
Duval -3.0 -3.3 1989 1989 R 9
Hillsborough -4.8 -7.0 1990 1988 R 6
Orange -3.1 -3.0 1986 1992 R 16
Escambia -4.2 -3.1 1989 1982 R 16
Alachua -3.0 -3.3 1982 1988 R 6
Beale 3-6 -3.8 -3.7 1987 1987 R 7
Beale > 6 -2.6 -4.9 1991 1982 R 25
  1. Results for white males (WM) and black males (BM) include: 1) the average annual percent change (AAPC) computed over the entire time series, 2) the onset year for the first significant decline in the proportion of late-stage diagnosis (i.e. APC negative and significantly different from zero), 3) the results of the test of parallelism using a significance level α = 0.05 (R = reject, NR = non reject), and 4) the value of the B rr' statistic that measures the number of years where the 95% confidence intervals of APC for white and black males did not overlap (Equation 6).