TABLE 3.
Sib-sib correlation coefficients for the IgG subclass responses to defined and crude P. falciparum antigensa
Antigen and antibody | Urban area
|
Rural area
|
Urban and rural areas
|
|||
---|---|---|---|---|---|---|
Rss | P | Rss | P | Rss | P | |
RESA | ||||||
IgG1 | 0.23 | 0.0016 | 0.35 | 0.0010 | 0.25 | 0.0001 |
IgG2 | 0.23 | 0.0020 | 0.23 | 0.0210 | 0.21 | 0.0006 |
IgG3 | 0.12 | NS | 0.23 | 0.0234 | 0.14 | 0.0165 |
IgG4 | 0.14 | 0.0032 | 0.46 | <10–4 | 0.30 | <10–4 |
IgG | 0.22 | 0.0023 | 0.17 | NS | 0.20 | 0.0012 |
MSP-1-Nt | ||||||
IgG1 | 0.20 | 0.0054 | 0.30 | 0.0044 | 0.24 | 0.0001 |
IgG2 | 0.22 | 0.0023 | 0.17 | NS | 0.21 | 0.0008 |
IgG3 | 0.29 | 0.0001 | 0.31 | 0.0034 | 0.31 | <10–4 |
IgG4 | 0.14 | 0.0290 | 0.39 | 0.0003 | 0.26 | 0.0001 |
IgG | 0.28 | 0.0002 | 0.19 | 0.0450 | 0.24 | 0.0002 |
MSP-2-Nt | ||||||
IgG1 | 0.26 | 0.0004 | 0.23 | 0.0210 | 0.25 | 0.0001 |
IgG2 | 0.14 | 0.0280 | 0.19 | 0.0457 | 0.21 | 0.0009 |
IgG3 | 0.19 | 0.0071 | 0.28 | 0.0078 | 0.24 | 0.0001 |
IgG4 | 0.32 | <10–4 | 0.24 | 0.0183 | 0.29 | <10–4 |
IgG | 0.28 | 0.0002 | 0.34 | 0.0014 | 0.30 | <10–4 |
MSP-2-Ct1 | ||||||
IgG1 | 0.17 | 0.0120 | 0.13 | NS | 0.15 | 0.0105 |
IgG2 | 0.46 | <10–4 | 0.27 | 0.0081 | 0.39 | <10–4 |
IgG3 | 0.13 | 0.0470 | 0.22 | 0.0260 | 0.18 | 0.0032 |
IgG4 | 0.24 | 0.0010 | 0.16 | NS | 0.21 | 0.0007 |
IgG | 0.32 | <10–4 | 0.19 | 0.0480 | 0.26 | <10–4 |
MSP-2-Ct2 | ||||||
IgG1 | 0.18 | 0.0097 | 0.18 | NS | 0.18 | 0.0037 |
IgG2 | 0.20 | 0.0057 | 0.22 | 0.0257 | 0.22 | 0.0006 |
IgG3 | 0.25 | 0.0007 | 0.24 | 0.0163 | 0.26 | 0.0001 |
IgG4 | 0.35 | <10–4 | 0.10 | NS | 0.26 | 0.0001 |
IgG | 0.32 | <10–4 | 0.14 | NS | 0.25 | 0.0001 |
Extract | ||||||
IgG1 | 0.18 | 0.0110 | 0.36 | 0.0008 | 0.24 | 0.0002 |
IgG2 | 0.12 | NS | 0.30 | 0.0040 | 0.19 | 0.0020 |
IgG3 | 0.16 | 0.0207 | 0.27 | 0.0094 | 0.19 | 0.0018 |
IgG4 | 0.21 | 0.0030 | 0.19 | 0.0490 | 0.21 | 0.0009 |
IgG | 0.10 | NS | 0.26 | 0.0117 | 0.13 | 0.0230 |
The intraclass correlation coefficients were calculated as previously described (9), and the ANOVA F statistic was used to calculate the levels of significance.