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Digital training workshops for individuals over 55 led by a municipal library network
Last registered on June 28, 2017


Trial Information
General Information
Digital training workshops for individuals over 55 led by a municipal library network
Initial registration date
June 28, 2017
Last updated
June 28, 2017 11:33 AM EDT
Primary Investigator
Other Primary Investigator(s)
PI Affiliation
Additional Trial Information
Start date
End date
Secondary IDs
Since the launch of the World Wide Web project in the 90s, the development of internet has being constantly accelerating, modifying the way in which social relations are established and maintained, as well as the resources used by the population to develop day-to-day activities, like shopping or reading the news. This situation has led to the outbreak of a new phenomenon: the digital gap. A problem which refers to the inability of certain people to take advantage of this new tool, and that specially affects the elderly. This study looks at a program led by a local network of libraries in the province of Barcelona which offers short courses of digital training to individuals aged 55 and over, to look at the impact of the digital training on the digital knowledge and the social network of participants.
External Link(s)
Registration Citation
Ferré, Oscar and Ramon Sabes-Figuera. 2017. "Digital training workshops for individuals over 55 led by a municipal library network." AEA RCT Registry. June 28. https://doi.org/10.1257/rct.2289-1.0.
Former Citation
Ferré, Oscar, Ramon Sabes-Figuera and Ramon Sabes-Figuera. 2017. "Digital training workshops for individuals over 55 led by a municipal library network." AEA RCT Registry. June 28. http://www.socialscienceregistry.org/trials/2289/history/19031.
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Experimental Details
The intervention consists on three in-person digital training workshops, 4 hours each, in which participants are taught how to use tablets and smartphones:

Session 1: How does your smartphone works?
Session 2: Pictures and videos with your smartphone
Session 3: Whatsapp and other instant messaging apps

Workshops take place in a classroom in the municipal library of the neighborhood, and each course has 15 students. The program is aimed at people over 55 years old, and therefore only people over that age are eligible for the treatment.
Intervention Start Date
Intervention End Date
Primary Outcomes
Primary Outcomes (end points)
Internet usage frequency, number of apps used, size of the social network, frequency of contact with the closest person
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
1. 20 libraries from the municipal network are selected to participate in the trial.
2. Each library should select 35 eligible and interested participants, leading to 700 eligible candidates.
3. In each library, 5 people are randomly selected to be part of the "reservation group", constructed to fill the free spots in the workshops if people from the treatment resign.
4. The remaining 30 eligible individuals in each library (600 in total) are randomly divided between the treatment and the control groups, leading to two groups of 300 individuals.

Experimental Design Details
Randomization Method
In office randomization
Randomization Unit
Was the treatment clustered?
Experiment Characteristics
Sample size: planned number of clusters
600 individuals
Sample size: planned number of observations
600 individuals
Sample size (or number of clusters) by treatment arms
300 individuals in the treatment group,
300 individuals in the control group
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB Name
IRB Approval Date
IRB Approval Number
Post Trial Information
Study Withdrawal
Is the intervention completed?
Intervention Completion Date
June 30, 2016, 12:00 AM +00:00
Is data collection complete?
Data Collection Completion Date
June 30, 2016, 12:00 AM +00:00
Final Sample Size: Number of Clusters (Unit of Randomization)
519 individuals
Was attrition correlated with treatment status?
Final Sample Size: Total Number of Observations
300 individuals
Final Sample Size (or Number of Clusters) by Treatment Arms
130 individuals in the treatment group, 170 individuals in the control group
Data Publication
Data Publication
Is public data available?
Program Files
Program Files
Reports, Papers & Other Materials
Relevant Paper(s)