Table 3 Comparison of the levels of the different IgG subclasses within the different study sites

1.8017 ± 0.3213

1.1537 ± 0.3213

2.2087 ± 0.3238

1.1843 ± 0.3299

0.017

2.4315 ± 0.3722

1.4344 ± 0.3673

2.4139 ± 0.3769

1.3981 ± 0.437

0.003

1.0869 ± 0.3791

1.1013 ± 0.3487

1.0632 ± 0.3988

1.0096 ± 0.4467

0.274

1.1305 ± 0.3439

1.2379 ± 0.3532

1.1015 ± 0.3996

1.0139 ± 0.4510

0.184

2.4534 ± 0.2970

1.4371 ± 0.2862

2.4409 ± 0.3176

1.4311 ± 0.3259

0.011

2.2754 ± 0.3751

1.2657 ± 0.3663

2.2617 ± 0.3922

1.2283 ± 0.4332

0.027