Maternal education Frequency* Median (Range) age at diagnosis in months Mean (SD) age at diagnosis in month0073
 No formal education 4 90 (84-96) 90.0 (6.9)
Primary education 29 36 (3-144) 50.8 (44.4)
Secondary education 69 18 (3-176) 33.7 (33.6)
First degree 48 24 (2-144) 38.5 (35.9)
Second degree 3 60 (12-72) 48.0 (31.7)
*Educational level of four mothers could not be ascertained
Table 4: Age at diagnosis with respect to mother’s educational level.