The GDP, on per capita basis, was also inversely related to death rate (coefficient: –0.00631, 95% CI: –0.01112, –0.00151, p-value = 0.010) in univariable analyses.
There was a small but statistically non-significant association between HSMR and the proportion of avoidable deaths (regression coefficient 0.3, 95% confidence interval −0.2 to 0.7).
The quasi-Poisson regression analysis indicated that the prevalence rate of depressive symptoms in 2006 was not associated with the rate of unnatural child deaths (regression coefficient: −0.328, p = 0.78) and neither was the CES-D score in 2012 (regression coefficient: −1.553, p = 0.19).
In 2001, May [42] showed that according to environmental fluctuation, the population birth and death rate, transmission coefficient and other parameters exhibit random perturbations to a lesser or greater extent.
May [21] pointed out that due to environmental fluctuation, the birth rates, death rates, transmission coefficient and other parameters of a deterministic system give a greater or lesser extent of random fluctuations.
Similar age patterns were found for all-cause deaths; the correlation coefficient between respiratory and all-cause excess-death rates was >0.99 (p<0.01).
The number of cases was significantly correlated with the number of deaths (Spearman correlation coefficient 0.46, P=0.001).
For coronary deaths the kappa coefficient increased from "substantial" to "almost perfect" agreement when the autopsy results were available to the mortality statistics.
Fitting models separately for pre- and post-progression utilities when including time to death yielded similar coefficients for pre-progression and post-progression - the consistency of parameter estimates and standard errors across models when including progression status (moving from Model 2 to Model 3) indicate low levels of multi-collinearity between progression status and time to death.
Social class gradients are present in injury deaths rates (e.g. a correlation coefficient between death due to accidents and social deprivation r = 0.56 and a 17 times higher homicide rate in social class V vs. I in England, 1980 1984 [ 40] and 1980 1995 [ 42], respectively).
