UN Regional Workshop on Data Processing, Bangkok, Sep Philippines 2007 Census of Population Data Processing Philippines 2007 Census of Population Data Processing Valentino C. Abuan Director, Information Resources Dept. National Statistics Office (Philippines)

UN Regional Workshop on Data Processing, Bangkok, Sep B ackground on POPCEN 2007 Originally targeted in 2005 as a mid-decade census Conducted in August 2007 (a rainy month) Did not include housing questions Population count: M, proclaimed in April 2008 Interviewers hired; non-teachers

UN Regional Workshop on Data Processing, Bangkok, Sep C ensus Forms CP Form 1 – Listing Sheets CP Form 2 – Household Questionnaire CP Form 4 – Institutional HH Quest CP Form 5 – Barangay Characteristics CP Form 7 – Self-Administered Quest

UN Regional Workshop on Data Processing, Bangkok, Sep Provincial Processing Stations (80 sites) P rocessing Centers Regional Data Processing Centers (17 sites) Central Data Processing Center (2 sites)

UN Regional Workshop on Data Processing, Bangkok, Sep Manual document preparation and batching P rovincial Processing Tasks Manual Coding for CP Forms 2, 4 & 7 - Place of school - Highest grade - Occupation - Place of work and residence (more) Coding Verification - 20% sample for Forms 1, 2 and % verification for Forms 5 and 7

UN Regional Workshop on Data Processing, Bangkok, Sep P rovincial Processing Tasks Data Entry (using CSPro) - CP Form 5 (Barangay Characteristics) - CP Form 7 (Self-Administered Quest) (Continuation) Completeness & Consistency Checks (CP Form 1 vs. CP Forms 5 and 7) Transmittal of Documents and Files to Regional DP Centers

UN Regional Workshop on Data Processing, Bangkok, Sep Document Receipt and Control R egional Processing Tasks Document Scanning (Forms 2 and 4) - used Kodak i610 scanners (more) Image QA - Form recognition - Visual check for dark, blurred, blanks, folded, etc. Image QA - Form recognition - Visual check for dark, blurred, blanks, folded, etc.

UN Regional Workshop on Data Processing, Bangkok, Sep st Pass Capture from Images - Interpretation/recognition of mark fields - ICR-based interpretation/recognition of geographic & household ID fields with 100% key verification - Used Eyes and Hands for Forms (EHF) software 1 st Pass Capture from Images - Interpretation/recognition of mark fields - ICR-based interpretation/recognition of geographic & household ID fields with 100% key verification - Used Eyes and Hands for Forms (EHF) software (Continuation) Consistency check (certification pass) of CP Forms 5 and 7 Transmittal of Files in DVD to Central DP Center R egional Processing Tasks Completeness Check (CP Forms 2 & 4)

UN Regional Workshop on Data Processing, Bangkok, Sep nd Pass Capture from Images - Concentrates on write-in fields - Uses key-from-image method - Software: Custom-made using Visual Basic 2nd Pass Capture from Images - Concentrates on write-in fields - Uses key-from-image method - Software: Custom-made using Visual Basic Creation of Microdata Public-Use-Files C entral Data Processing Tasks Edit/Imputation Receipt and Control (DVDs and Files) Image Check (visual) Tabulations

UN Regional Workshop on Data Processing, Bangkok, Sep I CR Use: 2000 CPH and 2007 POPCEN Characteristics2000 CPH2007 POPCEN Scanners Kodak 3900D (22 units)Kodak i610 (22 units) Software Eyes and Hands for Forms (EHF) EHF (same version used in 2000 CPH) Scanning Sites 4 Data Capture Centers (3 regional + 1 central) Regional DP Centers (17 sites) Data Capture Strategy (from images) Capture on Single Pass (all fields captured thru ICR in the same pass; done in all the 4 Data Capture Centers) Capture on Two Passes (1 st pass on mark fields and ID fields done in Regional DP Centers; 2 nd pass on write-in fields via key-from-image done centrally) ICR Application Developer System SupplierIn-House Staff (more)

UN Regional Workshop on Data Processing, Bangkok, Sep I CR Use: 2000 CPH and 2007 POPCEN Characteristics2000 CPH2007 POPCEN Problems encountered Emphasis on clear and legible entries led to some amount of rewriting into new quests Unanticipated quest shortage led to reprinting of additional quests New reprinted quests did not exactly match the defined form templates for ICR False recognition issue Prescribed/provided pencil lead not used by some Image QA not strictly implemented by some reg’l DP centers File corruption in image files during DVD writing (Continuation)

UN Regional Workshop on Data Processing, Bangkok, Sep Thank You! Census counts available at: