Table 7. Cohort 2—patients lost to follow up at 12 months in the original sample, n = 332.

Characteristic	Assessed at 12 months	Lost to follow-up at 12 months	P-valuea
	N = 193	N = 139
Prefracture dementia, n/N (%)	87/193 (45)	78/139 (56)	0.06
Delirium any time, n/N (%)	85/192 (44)	83/135 (62)	0.002
BMI, median (IQR)	22 (24–28)	21 (23–27)	0.03
Barthel index, median (IQR)	18 (15–20)	17 (12–19)	0.02
NEADL, median (IQR)	36(12–54)	24 (8–49)	0.02
MAP at admittance, median (IQR)	107(93–119)	104 (87–15)	0.04
MAP postop, median (IQR)	84(75–94)	80 (72–89)	0.01

BMI = Body Mass Index; IQR = Interquartile range; NEADL = Nottingham Extended Activities of Daily Living; MAP = Mean Arterial Pressure.

Missing data: Delirium any time: N = 5

^a Mann-Whitney tests; Chi-square tests; p-values are 2-tailed.