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Table 4 Summary of results of usability analysis.

From: Open source GIS for HIV/AIDS management

  Average time task one (minutes) Average time task two (minutes) Difference average time task one and two Average SUS
Sample 3.27 (0.47–8) 0.83 (0.1–2) 2.44 68.50 (35–97.5)
User group     
Clinics 3.24 (1.6–5) 1.16 (0.8 – 1.5) 2.09 64.64 (55–72.5)
Community 5.63 (2.5–8) 1.23 (0.9–2) 4.40 46.88 (35–75)
Convenience 1.83 (0.47–3) 0.32 (0.1–1.12) 1.51 78.75 (45–97.5)
Municipality 3.83 (2–6) 0.95 (0.45–1.6) 2.89 69.72 (62.5–85)
Level of computer use     
Coding 2.92 (1.16–5) 0.75 (0.1–1) 2.17 66.88 (35–95)
Internet 2.93 (0.47–5) 0.63 (0.15–1.4) 2.30 72.06 (45–97.5)
Word-processing 4.07 (1.6–8) 1.23 (0.45–2) 2.84 62.50 (35–72.5)
Education level     
High school 4.90 (2–8) 1.33 (1–2) 3.58 56.50 (35–72.5)
Tertiary 2.94 (0.47–6) 0.73 (0.1–1.6) 2.22 70.90 (35–97.5)
Gender     
Female 2.95 (0.47–7) 0.87 (0.1–2) 2.08 66.53 (35–97.5)
Male 3.75 (0.5–8) 0.76 (0.2–1.6) 2.99 71.46 (42.5–92.5)
Age     
20–29 2.52 (0.47–8) 0.39 (0.1–1) 2.13 72.75 (42.5–95)
30–39 4.29 (1.6–7) 1.21 (0.25–2) 3.08 67.50 (35–97.5)
40–49 3.51 (1.6–5) 1.02 (0.45–1.5) 2.49 64.50 (35–75)
50–59 3.00 (2–5) 0.88 (0.5–1) 2.13 69.38 (55–85)
  1. The table shows the average time taken to complete task one and task two, the difference in the average time taken to complete task one and two and the average SUS. The range (minimum and maximum) of these indicators is shown between brackets.