Transcript 15° Italian Population and housing censuses Geneve, may 25 2012 Experience with address lists and other preliminary work: the house number archive, an.

15° Italian Population and housing censuses
Geneve, may 25 2012
Experience with address lists and other preliminary
work: the house number archive, an information
infrastructure for the country
Francesco Di Pede - Damiano Abbatini
ISTAT
Dipartimento dei censimenti generali degli archivi amministrativi e dei registri statistici
15° Italian Population and Housing Censuses.
Main strategic innovations:
Municipality Population Register (LAC – Liste Anagrafiche
Comunali) used to organize and control the field work (mail out of
questionnaires and check list of respondents);
Supplementary lists of Auxiliary Sources (LIFA – Liste Integrative da
Fonti Ausiliarie; RNC – Rilevazione dei numeri civici) used to control
undercoverage of LACs;
Short Form for a sample of households;
Multi-Way Responses (Internet, postal carrier, hand-delivery).
In this context of technical and organizational innovations, addresses
and house numbers are instruments of great importance, as
indispensable for the accurate localization of statistical units.
15° Italian Population and Housing Censuses
A strategic goal of the Census has been the creation of the municipal
archives of addresses (house numbers) geocoded to the
census enumeration areas, used to:
Geocode the municipality population registers LAC;
Guide the enumerators in the field work;
Retrieve the undercoverage of registers and non-response of
households;
Undertake census of buildings.
15° Italian Population and Housing Censuses
In the new 2010-2011 census strategy, Istat has developed and tested
methods and technological tools for the construction of a database
of street list integrated with house numbers geocoded to
enumeration areas, by the use of different sources. This strategy
provides differentiated arrangements for the acquisition and
processing of data, depending on the different demographic classes
of the municipalities.
GeoCiv: Experimentation on municipal address indexes to
build-up municipal street indexes and address indexes
for RNC (urban areas of main cities);
RNC: House number survey (urban areas of main cities);
ANSC: Street indexes and address indexes national archives
(other areas of main cities and other municipalities).
GeoCiv Project
GeoCiv - In the period 2009/2010 Istat has acquired street indexes and
address indexes from all NUTS 3 level chief town and municipalities
with population over 20,000 inhabitants
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Objective: construction of municipal house numbers statistical archives geocoded to the census enumeration areas;
In collaboration with Poste Italiane (Italian Postal Service);
First step: elimination of duplicate or blank records and identification of
qualifying attributes in the heterogeneous information received;
Once prepared the data, the standardization of archive was started up;
At the end of the standardization and normalization of the archives,
addresses were geocoded to enumeration areas and georeferenced.
RNC
RNC – House Number Survey. Carried out in the major population
centers by enumerators during the period November 2010 - March 2011.
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509(1) municipalities involved: All NUTS 3 level chief town and municipalities
with population over 20,000 inhabitants on 1 January 2008 (53% of the
resident population in Italy);
Objectives. RNC had three objectives: to produce, before the census, a
database of house numbers validated by each municipality and geocoded to
the enumeration areas census; allow construction of a list to facilitate the
recovery of municipal population registers undcoverage; collecting
information on building stock and characteristics, thus anticipating a
substantial part of the field work traditionally carried out simultaneously in
the census of population and housing;
(1) The city of L'Aquila was excluded because of the earthquake of April 2009.
ANSC
ANSC (2010-2011) – Street indexes and adreess indexes National Archives in
collaboration with Land Registry Office (Agenzia del Territorio – AdT).
Information subject to constant updating by municipalities to which they
can accesspublic administrations, citizens and enterprises
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7.585 municipalities involved: municipalities with population under
20,000 inhabitants on 1 January 2008 (47% of the resident
population in Italy);
certification of the street index: approving, modifying and integrating a
computerized street index proposed by the AdT;
compilation of the “new form Istat CP.5" (set of circulation areas and house
numbers that fall within each census enumeration area);
municipalities have been working off-line using software installed on their
workstations for the compilation and updating of their street index
Framework of the activities
2006
Feasibility study
2009/2010 ANSC Project
PORTALE PER
I COMUNI
2007
Presence Municipal Archives
survey
2007
Testing of pilot areas
2008
GeoCiv project definition
2009/2010
GeoCiv project implementation
RNC
2010/2011
House number survey (RNC)
RNC: field work tools data source
• Updated aerial photos of
the territory
• 2011 Enumeration Area’s
boundaries
• Graph maps of commercial
source
• ADT Cadastral mapping of
buildings
• GeoCiv house numbers archive
Municipal Archive of addresses
INDIRIZZO
SEZ2011
VIA LICONI 1
VIA LICONI 3
VIA LICONI 3 A
VIA EMILE LEXERT 1
98
98
98
98
RNC: buildings-addresses relationship
Municipal Archive of addresses
ADDRESS
SEZ2011
VIA LICONI 1
VIA LICONI 3
VIA LICONI 3 A
VIA MONTE ROSA 1
98
98
98
98
BUILDING CODE
B
C
C
A
INTENDED USE
residential
not-residential
residential
residential
Address found by enumarator
VIA LICONI 5
98
C
residential
RNC: buildings enumeration
Identification of missing buildings in cadastral mapping
3
4
2
1
• Buildings 1 to 2 - 3 4 have
been reported in the
database by address
F
G
I
J
N
2
H
1
D
M
A
E
B
K
O
House
House
numbers
numberfrom
frommunicipal
survey archive
RNC: enumeration area
Via del Bracco
L
Summary data for enumeration area
Enumeration Area n. 357
List/input
Variation
Observed
House number
22
+15
37
Buildings
14
+2
16
Households
53
-4
49
111
-3
108
People
F
G
I
J
L
2
1
H
D
M
A
E
B
K
O
Via del Bracco
N
Attributes
25 residential
12 non-residential
15 residential
1 not used
47 from lac
1 from lifa
1 from rnc
50 male
58 female
Summary data for house number
Via Cadibona 6
List/input
Households
People
56
Building E
Attributes
Variation
53 da lac
1 da lifa
2 da rnc
131
Observed
-3
53
-5
126
Via Cadibona
Via Cadibona 6
E
Building E
Residential
Interiors
Stairwells floors
8
3
Attributes
51 from LAC
1 from LIFA
1 from RNC
61 male
65 female
Not-residential
Interiors
56
Occupied
dwellings
53
beyond enumeration area: summary data by house number
2
Unoccupied
dwellings
3
349
346
347
350
348
D
G
I
A
C
A
E
D
2
Via
H
D
M
B
E
E
354
357
N
356
A
29
Viale Sempione
Data
Cadibona
related
House
Building
to
Street
numbers
the whole
crosses
on with
Cadibona
street
7
access
enumeration
Street
on both
missing
sidesinofthe
Cadibona
cadastral
areas
Street
map
and related buildings
beyond enumerationa area: summary data by street circulation area
K
O
Summary data by Street
Cadibona Street
List/input
House
numbers
20
Variation Observed
+16
36
Buildings
18
+1
19
Households
37
-3
34
People
81
+1
82
Attributes
21 residential
15 not-residential
16 residential
2 commercial
1 not used
33 from LAC
0 from LIFA
1 from RNC
35 male
47 female
thanks for your attention
email contacts for more detailed information and documentation:
Francesco Di Pede: [email protected]
Damiano Abbatini: [email protected]
ISTAT
Dipartimento dei censimenti generali degli archivi amministrativi e dei registri
statistici