Approach n OT (min) LOS (days) HAL Lotan et al. [9] Weighted Meanh 419 419 204 204 3 3 LAP Raman et al. [4] Park et al. [2] Raybourn et al. [7] Tugcu et al. [3] Weighted Mean 22 38 10 13 83   25 172.4 165 114 149.8 2.21 3.9 2.1 2.11 2.95 LESS Raman et al. [4] Park et al. [2] Raybourn et al. [7] Tugcu et al. [3] Weighted Mean 11 19 11 14 55   122 190.8 151 117.5 150.4 2.04 2.7 2.36 2.07 2.34 hWeighted mean from 9 studies compiled in Lotan et al. [9]

Table 5: HAL, LAP, and LESS contemporary studies used to generate weighted means of OT and LOS.