Table 5 The results of subgroup analysis

1.79 (1.46–2.19)

2.96 (2.17–3.35)

2.13 (1.81–2.51)

2.09 (1.76–2.47)

3.25 (2.48–4.26)

2.49 (2.10–2.96)

2.43 (1.90–3.09)

3.32 (2.08–5.29)

2.76 (2.18–3.49)

2.78 (2.09–3.69)

4.60 (2.34–9.06)

3.14 (2.35–4.19)

2.46 (1.27–4.78)

3.32 (1.77–6.23)

2.63 (1.75–3.95)

1.12 (0.71–1.78)

1.53 (0.99–2.37)

1.32 (0.96–1.82)

2.95 (1.51–5.79)

6.28 (3.05–12.94)

3.60 (2.18–5.94)

3.64 (2.32–5.72)

3.87 (1.81–8.29)

3.70 (2.51–5.45)