Figure 1From: Evidence for decline in the incidence of cystic fibrosis: a 35-year observational study in Brittany, FranceEvolution of the annual birth incidence rate of cystic fibrosis in Brittany over the period 1975-2009. As statistical analysis revealed that the most significant change in incidence rate was observed when the year 1990 was considered as the cut-off time, we plotted the trendlines independently for the periods 1975-1989 and 1990-2009.Back to article page