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COMMON QUESTIONAIRE
'Motor traffic and conservation'

The sample

The sample has been chosen considering the data of the population of Paderno Dugnano (31/12/1997). Proportions have been kept concerning both the sex and the distribution for the ranges of age:

v.a. popolazione % popolazione v.a. campione % campione
male 19169 48,6 111 49,1
female 20310 51,4 115 50,9
from 14 to 17 years 1826 4,6 10 4,4
from 18 to 28 years 6520 16,5 38 16,8
from 29 to 45 years 12874 32,6 74 32,7
from 46 to 62 years 10467 26,5 61 27,0
from 63 years 7792 19,7 43 19,0

In the first decade of October 1998 226 persons living in Paderno Dugnano were totally interviewed. Concerning the interviewees' job, the following results have been registered (see the graphic on the right)

The answers to the main

A) ENVIRONMENTAL AND SOCIAL PROBLEMS (4th and 5th questions)
B) HABITS AND MEANS OF TRANSPORT (from 11th to 17th question)
C) ECOLOGICAL MEASURES (18th and 19th question)
D) WHAT DOES YOUR CAR SYMBOLIZE FOR YOU? (21th question)