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Table 3 Task usability results: effectiveness, efficiency (task observations) and satisfaction (task interviews)

From: An online network tool for quality information to answer questions about occupational safety and health: usability and applicability

Task/feature N Effectiveness n Efficiency n Satisfaction n
Task 1 20 Effective 19 Efficient 11 Satisfied 17
Register     Partly efficient 8 Neither satisf./dissatisf. 2
     Partly inefficient 0 Dissatisfied 1
     Inefficient 1   
Task 2 12 Effective 10 Efficient 3 Satisfied 3
Ask a question     Partly efficient 5 Neither satisf./dissatisf. 7
     Partly inefficient 2 Dissatisfied 2
     Inefficient 2   
Task 3 12 Effective 11 Efficient 5 Satisfied 9
Search answer by words in search function     Partly efficient 4 Neither satisf./dissatisf. 1
     Partly inefficient 2 Dissatisfied 2
     Inefficient 1   
Task 4 20 Effective 19 Efficient 3 Satisfied 7
Search answer by category     Partly efficient 5 Neither satisf./dissatisf. 8
     Partly inefficient 11 Dissatisfied 5
     Inefficient 1   
Task 5 12 Effective 11 Efficient 3 Satisfied 7
Technical help from moderator or help function     Partly efficient 4 Neither satisf./dissatisf. 3
     Partly inefficient 4 Dissatisfied 2
     Inefficient 1   
Task 6 8 Effective 8 Efficient 3 Satisfied 3
Register as expert     Partly efficient 1 Neither satisf./dissatisf. 2
     Partly inefficient 4 Dissatisfied 3
     Inefficient 0   
Task 7 8 Effective 8 Efficient 6 Satisfied 6
Answer a question     Partly efficient 2 Neither satisf./dissatisf. 1
     Partly inefficient 0 Dissatisfied 1
     Inefficient 0   
Task 8 8 Effective 8 Efficient 5 Satisfied 6
Add a supplementary answer     Partly efficient 3 Neither satisf./dissatisf. 2
     Partly inefficient 0 Dissatisfied 0
     Inefficient 0   
  1. Participants (N = 20) are questioners from the working population (N = 12) and experts (N = 8). Questioners executed Tasks 1, 2, 3, 4 and 5. Experts executed Tasks 1, 4, 6, 7 and 8.