Table IV.

Operating time, preoperative and postoperative haemoglobin, length of stay, and postoperative weightbearing status by procedure type.

Variable	Cup retention and dual-mobility	Acetabular revision	Overall	p-value
Mean operating time, mins (range)	68.4 (25.0 to 210.0)	101.5 (60.0 to 192.0)	82.2 (25.0 to 210.0)	< 0.001*
Mean preoperative haemoglobin, g/L (range)	137.6 (120.0 to 176.0)	137.5 (111.0 to 171.0)	137.5 (111.0 to 176.0)	0.693†
Mean postoperative haemoglobin, g/L (range)	120.4 (82.0 to 156.0)	109.7 (83.0 to 143.0)	115.8 (82.0 to 156.0)	< 0.001*‡
Mean drop in haemoglobin, g/L (range)	17.2 (1.0 to 54.0)	27.8 (11.0 to 44.0)	21.8 (1.0 to 54.0)	< 0.001*‡
Mean length of stay, days (range)	1.8 (0 to 7)	3.2 (1 to 18)	2.4 (0 to 18)	< 0.001*
Number of patients allowed to fully weightbear immediately postoperatively, n (%)	53 (100.0)	28 (68.3)	81 (86.2)	< 0.001*§

^*Significant at 5% level, no adjustment for multiple testing.

^†Mann-Whitney U test.

^‡Independent-samples t-test.

^§Chi-squared test.