Comparison of continuous pericapsular nerve group (PENG) block versus continuous fascia iliaca compartment block on pain management and quadriceps muscle strength after total hip arthroplasty: a prospective, randomized controlled study

Table 2 Comparison of resting NRS pain scores between the two groups

	PENG group, n = 29	FICB group, n = 28	F _intergroup, P	F _time, P	F _Interaction, P	PENG group vs. FICB group median difference (95% CI), P
T0	3 (1, 4)	3 (2, 4)	3.149, 0.087	18.661, < 0.001	1.662, 0.148	-1 (-1 to 0), 0.084
T1	2 (1, 3) ^a	3 (1, 4)				0 (-1 to 0), 0.063
T2	2 (2, 3)	3 (2, 3)				0 (-1 to 0), 0.101
T3	2 (2, 3)	3 (2, 3)				0(-1 to 0), 0.115
T4	2 (1, 3) ^a	3 (1, 3)				0 (-1 to 0), 0.171
T5	2 (1, 3) ^a	2 (1, 3)				0 (-1 to 0), 0.284

Data are presented as median (IQR). Multiple time points were compared using repeated-measures ANOVA. Comparison between the groups was analyzed using the Mann-Whitney U test. F_intergroup: F-value of the test statistic for inter-group comparison between groups; F_time: F-value of the test statistic for multiple time points comparison between groups; F_Interaction: F-value of the test statistic for interaction comparison between groups. ^a Denotes statistical significance compared to the T0 within the group. PENG group: continuous pericapsular nerve group block; FICB group: continuous fascia iliac compartment block. NRS: numerical rating scale. CI: interquartile range

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