Age was coded in three groups (I 8829 years. 3&44 years, 45567 years), and type of household defined as living with
children (I), living with adults only (2) or living alone (3). Occupation was coded as cook (1) waiter (2) or other (3). The
third occupational group termed “other” consisted mostly of women who worked behind counters in cafeterias and canteens,
and men who did supervisory work as innkeepers, publicans and restauranteurs.