Table 3 Subgroup analysis stratified by block type (continuous catheterization or single injection)

Single short FTB vs. ACB

 Pain score with rest at 24 h

2

73

73

-0.84(-1.10,-0.58)

I² = 0%, P < 0.001

 Pain score with activity at 24 h

2

73

73

-0.81(-1.03,-0.59)

I² = 0%, P < 0.001

 Pain score with rest at 48 h

2

73

73

-0.04(-0.23,0.15)

I² = 64%, P = 0.66

 Pain score with activity at 48 h

2

73

73

-0.22(-0.44,0.00)

I² = 0%, P = 0.06

 Adverse reaction incidence rate

3

114

114

0.800(0,1)0.42.54

I² = 0%, P = 0.51

Continuous FTB vs.ACB with catheter

 Pain score with rest at 24 h

2

71

71

0.74(0.50,0.99)

I² = 0%, P < 0.001

 Pain score with activity at 24 h

2

71

71

0.780(0,1)0.53.03

I² = 0%, P < 0.001

 Pain score with rest at 48 h

2

71

71

0.460(0,0)0.29.63

I² = 84%, P < 0.001

 Pain score with activity at 48 h

2

71

71

0.28(0,0)0.12.44

I² = 97%, P < 0.001

 Postoperative satisfaction score

2

71

71

-0.99(-1.49,-0.49)

I² = 70%, P < 0.001

 Adverse reaction incidence rate

2

70

70

0.441(0,3)0.62.33

I² = 0%, P = 0.40