USABILITY PROBLEMS EXPERIENCED BY SENIORS

DEPARTMENT OF COMPUTER SCIENCE

CENTRE FOR SOCIO INTERACTIVE DESIGN

ANDERS BRUUNBRUUN@CS.AAU.DK

WWW.CS.AAU.DK/~BRUUN

CENTRE FOR SOCIO INTERACTIVE DESIGN

Usabi l i ty test ing of home heal thcare systems

Types of usabi l i ty problems exper ienced by seniorsB r u u n , A . a n d S t a g e , J . , 2 0 1 0 . U s a b i l i t y P r o b l e m s i n a H o m e Te l e m e d i c i n e S y s t e m . I n P r o c . H E A LT H I N F . I N S T I C C P r e s s ( 2 0 1 0 ) .

B r u u n , A . , H a h n , C . , Vo i g t , B . a n d S c h u l t z , M . D i g g i n g W i d e a n d N a r r o w : A n E x p l o r a t o r y S t u d y o f S e n i o r a n d Yo u n g e r U s e r s ’ S t r a t e g i e s f o r R e t r i e v i n g I n f o r m a t i o n f r o m a H e a l t h c a r e P o r t a l . I n P r o c . I C I C T H . I N E A G ( 2 0 1 2 ) .

Evaluat ion of usabi l i ty test ing methodsB r u u n , A . a n d S t a g e , J . E v a l u a t i n g t h e U s a b i l i t y o f H o m e H e a l t h c a r e A p p l i c a t i o n s . I n C a r s t e n R ö c k e r a n d M a r t i n a Z i e f l e ( E d s . ) , H u m a n C e n t e r e d D e s i g n o f E - H e a l t h Te c h n o l o g i e s . I G I G l o b a l ( 2 0 1 0 ) .

Previous Research

Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 2

D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y

Healthcare System Device (HCS)Targeted user group: E lder lyAutomat ic t ransfer o f data

Secondary devicesBlood pressure meterBlood sugar meterScaleInter faces: B luetooth, In f rared and ser ia l cable

Danish Study

Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 3

A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N

D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y

Y N

Web PortalTargeted user group: E lder lyAutomat ic t ransfer o f dataInteract ion through TV set

Secondary devicesBlood pressure meterBlood sugar meterScale

German Study

Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 4

A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N

D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y

Usabi l i ty Lab

Part ic ipantsDanish s tudy: 5 sen iors (mean = 67 years)German s tudy: 6 sen iors

6 younger (mean = 35 years)

ProcedureInd iv idua l task comple t ion

Data col lect ionVideo and aud io record ingsEvent logs

Data analysisVideo Based Ana lys is

Study Design

Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 5

A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N

D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y

Subject Room 1

SubjectRoom 2

Control Room

curtain

operator

Tasks

Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 6

A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N

D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y

Task # Task Description (Danish study / HCS device)

1 Connect and install the HCS and secondary devices

2 Transfer data from the blood sugar meter to the HCS. The blood sugar meter is connected using a cable.

3 Measure the weight and transfer data from the scale to the HCS.

4 A new wireless blood sugar meter is used. Transfer the data from this to the HCS.

5 Clean the equipment.

Task # Task Description (German study / Web Portal)

1 Log in

2 Change font size

3 Fix heating issues

4 Show vital data

5 Log out

Y N

No. of Identi f ied Usabil i ty Problems

Findings

Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 7

A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N

D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y

HCS Device Web PortalElderly (n=5) Elderly (n=6) Young (n=6)

Critical 14 6 2Serious 15 10 3Cosmetic 20 26 11Total 51 42 16

Types of Usabil i ty Problems Experienced

Findings

HCS Device Web Portal

Elderly (n=5) Elderly (n=6) Young (n=6)

Crit

ical

Serio

us

Cos

met

ic

Tota

l

Crit

ical

Serio

us

Cos

met

ic

Tota

l

Crit

ical

Serio

us

Cos

met

ic

Tota

l

Affordance 2 2 4 1 2 1 4 1 1 1 3Cognitive loadConsistency 1 1 1 1Ergonomics 2 2 4 4 2 2Feedback 1 3 3 7 3 4 7 1 1Information 5 8 4 17 2 3 8 13 1 1 3 5Interactionstyle

1 1

Mapping 1 1 1 1Navigation 1 1 6 6 3 3Task flow 1 1User’s mentalmodel

2 3 5 10 1 1

Visibility 3 4 7 1 2 1 4 1 1 2Total 14 17 20 51 6 10 26 42 2 3 11 1

6

InformationDoes not understand text ”Detect ing phonel ine”

User ’s mental modelUnclear how to connect B luetooth sca le

Missing feedbackId le screen upon complet ion of quest ions

Visibi l i tyCannot f ind vo lume but tons

Findings

Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 9

A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N

D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y

Y N

Y N

Connecting and Instal l ing the HCS Device

Findings

Æ L D R E S P R O B L E M E R M E D S Y S T E M E R T I L S E L V M O N I T O R E R I N G – S L I D E 1 0

A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N

D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y

TaskUser 1 2 3 4 5 Total

1 33:25 10:10 08:47 07:37 01:15 1:01:142 33:44 09:34 04:30 04:54 01:00 53:423 28:25 02:26 02:45 05:08 01:24 40:084 18:43 02:43 04:24 04:07 01:19 31:165 26:05 01:06 03:31 04:45 00:41 36:08

Average 28:09 05:12 05:35 05:18 01:08 45:22

Y N

Object ive: Problems Experienced by Seniors

FindingsSen io rs exper ience more p rob lems than younger usersTypes o f p rob lems exper ienced

When designing for seniors, pay part icular at tent ion to:Connec t ion and ins ta l la t ion d i f f i cu l t iesComplex / techn ica l te rmino logyNon-con fo rmi ty to user ’s menta l mode lInsu f f i c ien t feedbackNon-v is ib le in te rac t i ve ressources (v is ib i l i t y )

Conclusions

A S E S S M E N T – P A G E 1 1

A N D E R S B R U U NB R U U N @ C S . A A U . D K – W W W . C S . A A U . D K / ~ B R U U N

D E P A R T M E N T O F C O M P U T E R S C I E N C EA A L B O R G U N I V E R S I T Y

Anders Bruunbruun@cs.aau.dkwww.cs.aau.dk/~bruun

Department of computer scienceCentre for socio interactive design

CENTRE FOR SOCIO INTERACTIVE DESIGN