Difficulty Likert Index *	Level of Difficulty
≥4.51	No Difficulty
4.01–4.50	Slight Difficulty
3.51–4.00	Moderate Difficulty
≤3.50	Significant Difficulty
* Assuming a 90% Likert 5 rate for no difficulty, 70% for slight difficulty, 50% for moderate difficulty and 30% for significant difficulty and the other responses equally distributed amongst the lower Likert numbers, the mean Likert scores derived were 4.75 (no difficulty), 4.25 (slight difficulty), 3.75 (moderate difficulty) and 3.25 (slight difficulty). Using these mean values, a scale of ≥4.51 to 5.00 to signify no difficulty, 4.01 to 4.50 to signify slight difficulty, 3.51 to 4.00 to signify moderate difficulty and ≤3.50 to signify significant difficulty was created.