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1 Internet Option in the 2010 Census in Korea

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Page 1: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

1

Internet Option in the 2010 Census in Korea

Page 2: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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Unit: Million Us Dollar

$46.8M

1995

$72.5M

2000

$112.1M

2005

$157.2M

2010 1995 2000 2005 2010

15.5%

20.0%

12.7%

23.9%

414

317222

164

Unit: Thousand People

1.7%

2006

2.2%

2007

2.8%

2008

3.6%

2009

Economically Active Population

Source : Korea Internet Security Agency  (2010)

70.2%

2002 2004

72.2%

2006

78.4%

2008

80.6%

2010

81.6%

Source : Wall Street Journal (2013) 

Page 3: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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Page 4: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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DB

Address DB, Household list, Housing DB Pull & Push Strategy

Thank YouNote (e‐mail)

Yes

Yes

Yes

No

No

Create Internet Access Code

Intent toparticipate

• Send SMS to encourage response

Give Internet Access Code

PreparationPreparation

Automatic editingAutomatic editing

PublicCampaignPublicCampaign

Fill Out the FormFill Out the Form

ConfirmConfirm

Finished?Finished?

Electronic management

Re‐contact those who haven’t completed the form

Creating Internet access code by using 32 alphanumeric combinations

‐ Excluding 1, I, 0 and O for potential confusions due to similarities

‐ Administrative districts(3 digits)‐Identification number(4 digits)‐

Verification number (2 digits)

Page 5: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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Page 6: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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Visit the webpage forInternet option

Response through Internet Option

For Foreigners Enter Internet Access Code

Page 7: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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Page 8: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

8

For checking logic, edit specifications(88 for short form, 227 for long form) were used.

Page 9: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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The management system automatically managethe input process and report the status.

This household has completed the form

This householdhas not completedthe form

Encoding SSL

External Network Internal Firewall

WEB Sever WEB Sever WAS Sever DB Sever

WEB EXT

WEB WAS DB

Internet

e‐Census System

InternetRouter

Web Firewall ExternalFirewall

WEBFirewall

WASFirewall

DBFirewall

User Security

PC Security

User Security(Level 1)

Network Security(Level 2)

Web Service(Level 3)

Server Security(Level 4)

DB Security(Level 5)

Access Control Web Service Security Security OS Encoding Data

PC keyboard

Web browser

No capture

Encoding SSL

Web FirewallEncoding personalinformation

Controlling accesses to server

Separating internal and external  network

Control irregulartraffic

Page 10: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

10

47.7%

49.3%

short

long

100%

100%

Type of questionnaire

49.6%

40.4%

urban

rural

100%

100%

Urban/Rural

Overall Internet uptake rate : 47.9%

Category Target Participated Uptake Rate

2005 Census 15,890  141 0.9 

2010 Census 17,470  8,360  47.9

(unit: thousand households, %)

66

54 50 48

41 38 37 35 34 33 33 32 30

19 16 16 15

12 8 7 5

1 0

10

20

30

40

50

60

70

%

Page 11: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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Reduce the census cost :‐ 10,000 fewer enumerators : $3.9M saved‐ shorter enumeration period(19 days  ▶ 16 days) : $10.3M ‐ data processing cost saved : $3.5M

Convenience for response

Dislike the visit by enumerators

2.5%

SafetyIncentive

10.5%11.7%

72.2%

$17.7M

Internet option shows lower omission and duplication rates.

Internet Interview

Net omission rate 0.06 0.80

Omission rate 0.20 1.24

Duplication rate 0.14 0.44

Page 12: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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Internet Interview

Short form 0.08 1.83

Long form 1.27 3.56

No. of mean error

The logic check functions of the Internet option worked effectivelyto secure accurate response.  

No. of edit specifications : Short form(88) , Long form(227)  

Campaign for Internet Option Pull & Push strategy– incentives / Internet option first

Page 13: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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‐ Hand out gifts by drawings‐ Give students two hour credit for volunteer work

• Internet first

• Incentives

‐ Campaign for Internet survey

• Publicity Campaign

Internet Interview

Source : The evaluation of the Internet Questionnaire for 2015 Census,Youngshil Park, Hyeonjeong Park, Hyejin Kim, Jinwoo Bae, Deokho Kim, Statistical Research Institute (2014)

To design user‐friendly questionnaire‐ eye tracking experiments

To alleviate mode effect by designing questionnaire similar to paper mode‐ redesigning questionnaire pages from matrix form to topic based

Page 14: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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Heat Map

Gaze Plot

Page 15: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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Mixed?

How to read the questionnaire

Left to right?

Up to

 down?

Page 16: 2 Kim.pptx [Read-Only] - Home | National Academies · 2020. 4. 8. · 2 Unit: Million Us Dollar $46.8M 1995 $72.5M 2000 $112.1M 2005 $157.2M 2010 1995 2000 2005 2010 15.5% 20.0% 12.7%

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To design user‐friendly questionnaire‐ reflecting the results of eye tracking experiments‐ transform to topic‐based 

To maximize success factors in 2010 census‐ pull strategy ‐ incentives‐ push strategy – Internet option first