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. 2016 May 13;24(1):30–38. doi: 10.1093/jamia/ocw035

Table 3.

CT Crossover Patients With the Same LOINC Code With Descriptive Statistics for Time Between CTs Performed Within 3, 7, 30, 60, 90, and >90 Days

Time, days No. of Pts No. of CTs Mean CTs per Pt (SD) Range CTs (median) Mean no. of days (SD) Range days (median)
3 241 553 2.29 (0.76) 2–7 (2) 1.8 (0.99) 0–3 (2)
7 510 1327 2.6 (1.34) 2–11 (2) 3.97 (2.13) 0–7 (4)
30 1344 5000 3.72 (3.29) 2–25 (2) 14.33 (8.42) 0–30 (14)
60 1981 8136 4.11 (4.0) 2–40 (2) 25.96 (16.91) 0–60 (23)
90 2400 10 400 4.33 (4.46) 2–49 (2) 36.63 (25.5) 0–90 (32)
>90 6284 24 978 3.97 (3.35) 2–59 (3) 312.46 (279.94) 0–1227 (232)

Values are cumulative and include prior time intervals.