Table 1

Distribution of age and education levels in years for the United States and Japanese study populationsa

United StatesJapan
Cases (n = 371)Controls (n = 373)Cases (n = 410)Hospital controls (n = 252)Community controls (n = 411)
Age
 ≤391.61.31.72.41.5
 40–495.78.610.015.510.0
 50–5920.818.524.234.122.1
 60–6942.942.442.235.741.1
 ≥7029.129.222.012.325.3
 Total100100100100100
Education level in years
 <1217.611.552.843.042.4
 =1227.622.822.626.319.8
 >1254.965.724.630.737.8
 Total100100100100100
  • a Distribution is by percentage.