Table 4.

Mean system usability scale and NASA-task load index scores

Product name	System usability scale		NASA-task load index
	Score, mean (SD)	Range	Score, mean (SD)	Range
Med-e-lert	40.75 (31.78)	7–85	67.08 (25.60)	33.33–97.50
LiveFine	46.50 (27.38)	10–85	65.21 (21.32)	32.50–99.17
MedReady	28.63 (21.24)	0–65	72.92 (18.69)	43.33–92.50
MedSmart	41.44 (33.97)	5–87	59.23 (25.82)	13.33–93.33
MedTime Station	35.13 (17.84)	20–72	71.77 (21.98)	2.67–99.17
TimerCap T	78.67 (15.57)	50–100	29.35 (20.35)	4.17–55.83
TimerCap U	56.11 (30.92)	0–92	40.56 (27.72)	12.5–99.17
Jones	50.64 (24.63)	7–92	48.63 (18.11)	23.33–85.83
Reizen	50.67 (24.06)	20–92	50.28 (27.46)	4.17–76.67
VitaCarry	52.78 (31.69)	0–87	46.11 (23.45)	13.33–83.33
Nishiki	46.89 (26.50)	0–90	56.48 (26.12)	11.67–97.5
Medport MedGlider	57.20 (30.85)	0–95	45.75 (24.05)	18.33–95.00
TabTime	57.89 (31.36)	0–97	35.65 (20.30)	4.17–68.33
100-Hour	55.78 (25.28)	2–85	49.35 (24.57)	26.67–95.83
Med-Q	64.60 (27.85)	12–90	42.17 (28.70)	14.17–89.17
e-pill MedGlider	71.67 (30.84)	5–100	28.43 (20.80)	4.17–69.17
MedCentre	56.63 (22.10)	37–92	52.19 (18.52)	29.17–79.17
eNNOVEA	78.13 (14.13)	55–97	28.65 (14.97)	10.00–57.5
Multi-Alarm	51.56 (24.59)	15–95	45.65 (25.79)	4.17–78.33
Pill Storage Case	34.75 (22.60)	0–62	65.10 (14.17)	41.67–80.83
Pocket Doctor	35.00 (33.19)	0–92	68.33 (27.37)	20.00–93.33