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. Author manuscript; available in PMC: 2017 Aug 15.
Published in final edited form as: Contemp Clin Trials Commun. 2016 May 30;3:158–166. doi: 10.1016/j.conctc.2016.05.009

Table 1.

Consistency of Reported Average Waking Hours Patched Per Day by Method of Data Collection

Waking Hours Patched Per Day
N Median (IQR) Cronbach’s Alpha (95% CI)
Interviews conducted in 1st Year
Post Surgery5 		93 4.09 (2.80,5.44) 0.69 (0.58,0.8)
Interviews conducted in 2nd Year
Post Surgery6 		86 3.41 (1.43,5.00) 0.85 (0.79,0.90)
Interviews conducted in 3rd Year
Post Surgery7 		71 3.51 (1.96,5.46) 0.88 (0.82,0.92)
Interviews conducted in 4th Year
Post Surgery8 		62 3.41 (1.73,5.52) 0.87 (0.82,0.92)
All Diaries9 43 3.79 (1.73,5.00) 0.86 (0.78,0.92)
5

Interviews conducted 3, 6, 9 and 12 months after surgery

6

Interviews conducted 15, 18, 21 and 21 months after surgery

7

Interviews conducted 24, 27, 30, and 33 months after surgery

8

Interviews 36, 39, 42 and 45 months after surgery

9

Diaries 2 months after surgery and at 14, 26, 38 and 50 months of age