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Cumulative survival functions. The upper row corresponds to C1: Cat 1980–89 versus the USA 1975–79; the middle row corresponds to C2: Cat 1990–2001 versus the USA 1975–79; and the bottom row corresponds to C3 Cat 1990–2001 versus the USA 1990–2001. Observed Catalan data (dots), estimated Catalan functions using the 
and Catalan versus the US 
(continuous line), and the US cumulative survival function (dashed line).
