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Figure 1. The hearing of 70-80-year old men. Results from five epidemiological studies Four of these studies represent unscreened populations (grey line) (Gates et al., 1990; Davis, 1995; Jönsson and Rosenhall, 1998; Cruickshanks, 1998). In the fifth (Pearson et al., 1995) a screened population was studied.

Figure 1. The hearing of 70-80-year old men. Results from five epidemiological studies Four of these
studies represent unscreened populations (grey line) (Gates et al., 1990; Davis, 1995; Jönsson and
Rosenhall, 1998; Cruickshanks, 1998). In the fifth (Pearson et al., 1995) a screened population was
studied.