Characteristics

Cases (n = 258)

Controls (n = 183)

P value

Male

185 (71.7)

131 (71.6)

0.978

Age, mean (SD), y

57.72 (10.73)

56.88 (10.31)

0.412

Educational level

0.125

Illiteracy

8 (3.1)

3 (1.6)

Primary school

45 (17.4)

25 (13.7)

Secondary school

128 (49.6)

90 (49.2)

University and above

71 (27.5)

59 (32.2)

Unknown

6 (2.3)

6 (3.3)

Family history

9 (3.5)

3 (1.6)

0.379