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. 2006 Dec 13;4:16. doi: 10.1186/1478-7954-4-16

Table 5.

Microsimulation Results: Sojourn Durations, Sparse vs. Dense Data, Simulated Populations of 100,000/ADL, Women

Sparse Data Dense Datac


Nondisabled to Disabled or Dead Disabled to Nondisabled or Dead Nondisabled to Disabled or Dead Disabled to Nondisabled or Dead




mean na (SD) mean durationb (SD) mean n (SD) mean duration (SD) mean n (SD) mean duration (SD) mean n (SD) mean duration (SD)
ADL Eating 0.437 (0.509) 95.39 (50.62) 0.140 (0.356) 18.47 (19.01) 0.471 (0.529) 93.41 (50.48) 0.173 (0.398) 18.02 (18.22)
I/O Bedd 0.534 (0.552) 89.90 (50.39) 0.253 (0.470) 27.31 (26.34) 0.651 (0.618) 80.74 (49.60) 0.367 (0.564) 23.03 (22.63)
Mobility 0.556 (0.544) 87.72 (50.59) 0.262 (0.468) 37.47 (33.79) 0.696 (0.625) 77.47 (48.97) 0.400 (0.583) 27.48 (26.81)
Dressing 0.506 (0.639) 91.72 (50.60) 0.222 (0.439) 27.98 (26.50) 0.592 (0.592) 84.65 (50.45) 0.309 (0.518) 23.20 (22.53)
Bathing 0.602 (0.559) 86.07 (50.24) 0.302 (0.499) 37.00 (33.13) 0.722 (0.619) 77.65 (49.19) 0.418 (0.580) 32.79 (29.85)
Toileting 0.512 (0.531) 91.29 (50.81) 0.220 (0.436) 35.35 (32.61) 0.587 (0.572) 86.38 (50.05) 0.289 (0.497) 29.83 (27.82)

aMean n calculated from full 100,000 simulated population; SD = Standard Deviation.

bMean duration calculated as the mean of all existing transition intervals.

cComparisons of population means between corresponding categories of sparse and dense data are significant at p < 0.0001 in all instances.

dI/O Bed = Getting in or out of bed.