Perinatal mortality in Germany and other countries - annual data
In 1987, there is a
significant 4.9% increase of perinatal mortality relative to the trend of all other years (p=0.0088).
The excess rate in 1987 is 0.36 per 1000 births that translates to 317 excess
cases (95% CI: 67-578).
Figure 1: Perinatal mortality rates in Germany and long-term trend
in Germany, perinatal mortality in Poland is significantly increased in 1987 (p=0.0074). The excess rate is 0.57 per 1000 births
that translates to 354 excess cases (95% CI: 89-626). About 75% of the excess
perinatal deaths in 1987 are early neonatal deaths.
Figure 2: Perinatal mortality rates in Poland and logistic regression function
deviations from the trend, in units of standard deviations (standardised
residuals), are displayed in Figure 3.
Figure 3: Deviations between observed and expected rates (standardised residuals) in Germany (black squares) and Poland (white squares). The broken lines show the range of 2 standard deviations (2σ-range).
Figure 4: Perinatal mortality rates in England and Wales and logistic trend function
Since the caesium soil contamination was higher in the eastern than in western Germany, and highest in Bavaria, the most contaminated German region, individual regressions of the data subsets for East Germany, West Germany and Bavaria were also conducted. The results for the excess perinatal mortality rates, the relative increases, the numbers of excess cases, and the one-sided p-values are given in the following table. The excess perinatal mortality rate in 1987 is greater in Poland than in Germany, greater in East than in West Germany, and greater in Bavaria than in West Germany.