Scanning of DSS forms and use ofScanning of DSS forms and use ofScanning of DSS forms and use of Scanning of DSS forms and use of PDA for special module: PDA for special module: E i f M tl bE i f M tl bExperience from MatlabExperience from Matlab

A H M Golam MustafaA.H.M. Golam MustafaDr. Abdur RazzaqueDr Kim StreatfieldDr. Kim Streatfield

IntroductionIntroductionMatlab is a rural area (upazila) where ICDDR,B

IntroductionIntroduction( p ) ,

established a field station in 1963

Since 1966 the Centre has been maintaining aSince 1966, the Centre has been maintaining a Demographic Surveillance System in Matlab

In October 1977 half of the DSS villages inIn October 1977, half of the DSS villages in Matlab have been exposed to the Maternal Child Health-Family PlanningChild Health Family Planning

Outline of the presentationOutline of the presentationScanning of DSS forms

Outline of the presentationOutline of the presentation

- Birth- Death- Marriage/Divorce- Migration

PDA for special module- Child Morbidity- Food Insecurity

Health and Demographic Health and Demographic Surveillance System (HDSS)Surveillance System (HDSS)

Demographic Record Keeping SystemSurveillance System

(DSS)

Record Keeping System(RKS)

Geographic Information System (GIS)

DSSModified HDSS System (2007)Modified HDSS System (2007)

DSS - Vital events :Birth,Death, Mar,Div,Mig.- Data collection bi-monthly

All f d- All event forms are scanned - Data read by ICR (OMR+OCR)- No keyboard data entry (only verify)

RKS - MOTHER: Reproductive status, Contraceptive use, Husband location, Feeding Practice,ACD

- Child Health: DIARRHOEA, ARI, EPI by PDAFood insecurity by PDA- Food insecurity by PDA

GIS GPS survey on new BARI Tube wells etc- GPS survey on new BARI, Tube wells etc.

ObjectiveObjectiveReduce data entry backlog

ObjectiveObjectiveReduce data entry backlogIncrease data qualityReduce cost ofReduce cost of

- Data collection- Data managementg

Save the physical space for- Keeping Paper forms

DSSFORMSUp toUp to 2006

Scanable DSSScanable DSSFormsFormsFormsForms

Intelligent Character Reader (ICR) TechnologyScannerScanner –– Kodak i40/i1200 seriesKodak i40/i1200 seriesIntelligent Character Reader (ICR) TechnologyContinuous form feed scanner

Document scanner

Scanner Scanner Kodak i40/i1200 seriesKodak i40/i1200 series

Document scanner

- Letter,Legal etc. 600 dpi x 600 dpi- 600 dpi x 600 dpi

- up to 35 ppm (mono) / - up to 25 ppm (color)up to 25 ppm (color)- ADF ( 50 sheets )- up to 1500 scans per day

ICR MethodologyICR MethodologyDesign the questionnaire with 4 reference marksPlace the questions with relaxed space

gygy

Place the questions with relaxed spaceFill up the answers as clear as possibleCreate Template with a scanned questionnaireCreate Template with a scanned questionnaireTemplate design (Range and logical checks) Read (ICR) and verifyRead (ICR) and verify

- one by one- by group

EXPORT data into XLS, DBF format- ODBC export

Scanned ImagesScanned Images

Template:Template:A pattern of a window unit

from which dimensions d t band measurement can be

determined

Checks:- range g- logical - validity - List of values- List of values

Image Reading by ICR {Intelligent Image Reading by ICR {Intelligent Character Reader}Character Reader}Character Reader}Character Reader}

Form verification and Data ExportForm verification and Data Export

Data processing and analysisData processing and analysis -- 20072007

Total DSS Questionnaires = 33000

Data processing and analysis Data processing and analysis -- 20072007

Scanned : All event forms

Verified : All events forms

Pre entry edit checks : DonePre-entry edit checks : Done

Analysis : HDSS Annual Report by December, 2008

Types of ErrorsTypes of ErrorsWarning error

Specially in alphabet recognition

Types of ErrorsTypes of Errors

- Specially in alphabet recognition- Bad handwriting- Unnecessary erasing /overwritten

Incorrect recognition- 6,9,3 numbers (if not written neatly) - Form Reader recognize wrongly without error

Field definition in Templatep- If Template’s variables not matched with scanned questionnaire’s variables

Conclusion (scanner)Conclusion (scanner)Fast in reading the data from questionnairesL

Conclusion (scanner)Conclusion (scanner)

Less error No keyboard data entry is required (only verify)Questionnaire is converted in electronic imageQuestionnaire is converted in electronic imageElectronic image questionnaires is archived Less time required for data managementLess time required for data managementData analysis can be done within few daysReduce the data management costsReduce the data management costsSaves physical space to store paper formsThis technology save timeThis technology save time

01, November 2007,

Hi h tPDA

Handover to 5 CHRW High way to

PDA

5 CHRW

PDA

Model of PDAModel of PDAMode:hp iPAQ Pocket PC h4000 series

Model of PDAModel of PDAp Q

Processor :: Intel(R) RXA1200

Memory: 56.77 MB

Windows Mobile – 2003Windows Mobile 2003

Database: HandBase 3.0

Training on PDATraining on PDA

Child Morbidity and Food InsecurityChild Morbidity and Food InsecurityCHILD Morbidity

- DiarrhoeaDiarrhoea- Pneumonia

Immunization- DPT, BCG, Measles, Hepatitis-B, OPV

Other morbidityy- TB, Injury,Skin infection,Running nose, Asthma etc.

Food Insecurity- Food in take behavior of household

Data entry forms in PDA: Data entry forms in PDA: ChildChildMorbidityMorbidityMorbidityMorbidity

Data collection in the fieldData collection in the fieldEnvironment

Curiosity Curiosity

Satisfaction Satisfaction

Data collection by PDAData collection by PDAAbout 10262 interviews done

Data collection by PDAData collection by PDA

- 8922 Child morbidity- 1340 Food Insecurity

CHRW saves the data file in Storage card

Storage card capacity is 512 mbStorage card capacity is 512 mb

CHRW themselves transfer data to PC

Provide feed back to CHRW on the same day

Data processing and analysis Data processing and analysis CHRW comes in Matlab every 15 days

PDA linked with desktop PC by USB portp y p

Synchronized with desktop PC

Data transferred from SD cardData transferred from SD card

Data export from Handbase to Access

Feed back to CHRW on the same dayFeed back to CHRW on the same day

Data matching with HDSS database to extract required variable (ex- CBDT SEX MBDT etc )variable (ex CBDT, SEX, MBDT etc.)

Analysis – Frequency, Tabulation etc.

Diarrhoea Onset & RecoveryDiarrhoea Onset & Recovery

Onset of Diarrhoea episodes before interview

18

20 First round Second round

Recovery of Diarrhoea episodes after onset

2224 First round Second round

10

12

14

16

18

cent

age

121416182022

cent

age

0

2

4

6

8Perc

02468

10

Perc

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16+

Days

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16+

Days

Pneumonia Onset & RecoveryPneumonia Onset & RecoveryOnset of Pneumonia episodes before interview Recovery of Pneumonia episodes after onset

Pneumonia Onset & RecoveryPneumonia Onset & Recovery

10

12

14First round Second round

1618202224 First round Second round

4

6

8

Perc

enta

ge

810121416

Perc

enta

ge0

2

4

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16+0246

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16+0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16+

Days

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16+

Days

Opinion of interviewerOpinion of interviewerMerits :

Interesting to enter data directly from fieldQuality of data will improve (close ended question)Quality of data will improve (close ended question) Easy to correct errorEasy to carryFeel proud of using PDASave burden of carrying volumes and paper forms

Demerits:A little strain on eye Duration of battery charge not enoughDuration of battery charge not enoughHang up and data loss (10 records)

Q litQ lit

Q alit control team

Quality assuranceQuality assurance

Quality control team- Samples re-interview

Trigger - Interviewer’s logical capability- Software: Range & logical checks- Software: Range & logical checks

FlexibilityEditi f ilit- Editing facility

F t lF t lDSS data collection

Future planFuture planDSS data collection

- Field test going on

Verbal autopsy

A th i l t dAny other special study

Common platformCommon platform- All PDA user

U t dU t dTraining on PDA

Urgent needUrgent needTraining on PDA

- ProgrammingPDA softwarePDA software

- Basic4ppc/Visual studio 2008- "Wireless Fidelity" (Wi-Fi)y ( )

Hardware- With more memory capacityy p y- Long durability of battery

Conclusion (PDA)Conclusion (PDA)No data entry required in the office

Conclusion (PDA)Conclusion (PDA)

From data collection to report generation - in the next 2 days

More exposure in PDA application is required

No time lag from data collection to analysis

It reduces the cost of data management

It introduces paperless data collection systemp p y

Saving trees

Thank youThank youThank youThank you