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. 2006 Aug 15;63(12):802–807. doi: 10.1136/oem.2006.028308

Table 1 Case‐control comparisons of basic characteristics at reference date.

Control Case Total
Age (years)
 30–39 78 (23.64) 22 (22.68) 100 (23.42)
 40–49 46 (13.94) 14 (14.43) 60 (14.05)
 50–59 150 (45.45) 46 (47.43) 196 (45.90)
 60–69 56 (16.97) 15 (15.46) 71 (16.63)
Sex
 Male 132 (40.00) 45 (46.39) 177 (41.45)
 Female 198 (60.00) 52 (53.61) 250 (58.55)
Residential area
 Tokyo (met*) 124 (37.58) 42 (43.30) 166 (38.88)
 Tokyo (mun†) 54 (16.36) 18 (18.56) 72 (16.86)
 Chiba 42 (12.73) 10 (10.31) 52 (12.18)
 Kanagawa 48 (14.55) 12 (12.37) 60 (14.05)
 Saitama 62 (18.79) 15 (15.46) 77 (18.03)
Timing of interview
 00/12–01/11 25 (7.58) 20 (20.62) 45 (10.54)
 01/12–02/11 65 (19.69) 32 (32.99) 97 (22.71)
 02/12–03/11 134 (40.61) 33 (34.02) 167 (39.11)
 03/12–04/11 99 (30.00) 12 (12.37) 111 (26.00)
 04/12–05/03 7 (2.12) 0 (0.00) 7 (1.64)
Education
 Junior high school‡ 18 (5.45) 9 (9.28) 27 (6.32)
 High school§ 192 (58.19) 51 (52.57) 243 (56.91)
 College/graduate¶ 120 (36.36) 37 (38.15) 157 (36.76)
Marital status
 Single 26 (7.88) 14 (14.43) 40 (9.37)
 Married 280 (84.85) 79 (81.44) 359 (84.07)
 Divorced 13 (3.94) 1 (1.03) 14 (3.28)
 Deceased 11 (3.33) 3 (3.09) 14 (3.28)

*Metropolitan area of Tokyo.

†Municipalities of Tokyo.

‡Up to 9 years.

§Up to 14 years.

¶16 years or more.