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mhealth Summit - Alastair van Heerden

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Powerpoint slides of Alastair van Heerden's oral presentation at the mHealth summit. Washington 2010

Powerpoint slides of Alastair van Heerden's oral presentation at the mHealth summit. Washington 2010

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  • Of the 2 023 18-year-old BT20 participants who took part in the survey, 69% reported owning a mobile phone. In comparison, only 43.3% had access to a landline at home; a smaller number, 64%, reported having a South African identity book! Of the 31% who did not own a mobile phone, almost two thirds reported feeling socially isolated due to their lack of phone ownership. A mere 16 young people reported not wanting a mobile phone. As a group, no gender difference was found in how adolescents choose their phone - 59.8% selected it on functionality, followed by 38% who made the decision based on the phone’s styling. Only 8% choose a phone primarily based on price. As has been found in other studies, the majority of the sample (86.3%) reported being on a pay-as-you go plan; fewer than 10% had a contract with one of the cellular network service providers.With respect to phone usage, the top three most used features of phones were listening to music (78.6%), SMSing (74.8%) and taking photographs (72.5%). Although there was no gender difference between the number of calls and the number of photographs taken per day, an independent sample t-test revealed that girls sent more SMSs per day than boys (t= -2.028, p < 0.05). Unexpectedly, gender differences were reversed with respect to reports that mobile phones gave the owner a sense of feeling safe, with more boys than girls associating mobile phones with safety (χ2 (2, N = 1285) = 25.35, p < .01).

mhealth Summit - Alastair van Heerden mhealth Summit - Alastair van Heerden Presentation Transcript

  • Message delivery failed: Opportunities and challenges facing the collection of mHealth data from a cohort of young adults in South Africa.
    Alastair van Heerden
  • Introduction
  • Birth to Twenty
    Longitudinal cohort study
    Based in Soweto-Johannesburg
    Enrolled newborns and their families
    Track child health, growth & development
    mhs10
  • Unique cellular phone access in SA
  • Dual Citizenship
    69%
    64%
  • SA population access to:
    mhs10
  • Method
  • Study Design
    Pilot Study
    Cross-Sectional Design
    mhs10
    • N = 435
    • Median Age of 20yrs
  • Procedure
    mhs10
    Rollout & Training
    Receipt Notification
  • Results
  • Pre-Survey Findings
    mhs10
    MPs purchased
    1000
    996 (4)
    964 (32)
    939 (25)
    734 (205)
    435
    MPs purchased
    Distributed Phones
    Deleted App
    Installed new SIM
    Lost or Stolen
    Random Sample
  • Survey 1 (n=435)
    mhs10
    288 (66%)
    Working Phones
    Tutorial
    216
    Survey 1
    103
    91 (32%)
    Response (2wks)
    Unique Response
    104 (36%)
    No
    33
    Yes
    71
    No
    24
    Yes
    67
    PPT in sample
  • Average Response Rates
    mhs10
  • Survey Response Characteristics
    Mean Survey Time of 19min
    Mean Break Off Rate of 4%
    5% of items skipped
    Numeric most frequently skipped
    Multi choice least frequently skipped
    70% completed survey at home
    93% were completed in the presence of others
  • Discussion
  • Application Value
    mhs10
    TAM - Davis (1986)
    Reduce critical steps
    Survey App as part of a larger ecosystem
  • Delivery Mode
    mhs10
    App vs. SMS vs. USSD
    Fluidity of handsets
    Motivating participation