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. 2017 Jul 21;19(7):e249. doi: 10.2196/jmir.6729

Table 3.

Time intervals (days) between consecutive assessments.

 Questionnaires
M0-M6 M6-M12 M12-M18 M18-M24 M0-M24
Multiple Sclerosis Quality of Life-54






Mean (SDb) 177.82 (28.13) 188.42 (37.20) 180.25 (33.47) 180.75 (27.89) 724.05 (63.39)
Minimum −42ª 99 −41ª 0 1
Maximum 266 545 369 257 825
Median (IQRc) 182 (180-184) 183 (182-185) 182 (181-184) 183 (181-186) 730 (729-733)
Multiple Sclerosis Impact Profile






Mean (SD) 186.39 (35.86) 188.93 (34.69) 179.73 (31.44) 180.15 (28.27) 733.23 (21.13)
Minimum 114 166 −32ª 0 547
Maximum 738 552 374 305 852
Median (IQR) 183 (182-186) 183 (182.25-187) 182 (179-183.25) 183 (181-185) 731 (730-734)
Medication and Adherence






Mean (SD) 188.10 (11.87) 192.26 (49.86) 220.67 (69.19) 186.46 (47.43) 763.75 (66.42)
  Minimum 182 89 150 103 675
  Maximum 285 550 700 370 1093
  Median (IQR) 185 (182-188) 183 (180-188) 197 (189-216) 188 (152-200.5) 749 (718-776)

aNegative value because some respondents (MSQoL-54, N=3; MSIP, N=1) did not complete the consecutive questionnaires chronologically.

bSD: standard deviation.

cIQR: interquartile range.