The benchmark for acceptable usability is 68. A score of 48.2 placed SDM Plus in the "poor" range, with users consistently signalling difficulty, complexity, and low confidence across the system.
68 benchmark
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What the data said
1
Complexity barrier
Users found the system hard to navigate without external help. Most felt they would need a technical person just to get started.
Found system unnecessarily complex
72%
Would need technical support to use it
78%
Found the system cumbersome
75%
2
Confidence gap
Positive attitude scores skewed heavily toward disagreement. Most users did not feel confident or see themselves using the system frequently.
Would not use the system frequently (score 1 or 2)
76%
Did not find the system easy to use
74%
Did not feel very confident using it
37%
3
Learnability concern
Users felt the system had a steep learning curve. Most disagreed that others could pick it up quickly, and many felt unprepared to begin.