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. Author manuscript; available in PMC: 2009 Apr 10.
Published in final edited form as: Parasitology. 2009 Mar 5;136(5):567–577. doi: 10.1017/S0031182009005617

Table 4.

The association between S. ratti fecundity and immune parameters

Term Coefficient LR testa P valuea
IgG1 b Intercept 2.06 ± 0.35
Time (Day 21 p.s.i.) −3.48 ± 0.67 11.67 <0.001
Secondary dose (750 iL3s) 0.723 ± 0.195 12.87 <0.001
Primary spp. (N. brasiliensis) 0.390 ± 0.346 -
Primary spp. (S. venezuelensis) 0.759 ± 0.346 -
Primary spp. (S. ratti) 0.241 ± 0.444 12.12 <0.01
Time × Primary spp. (N. brasiliensis) 2.09 ± 0.68 -
Time × Primary spp. (S. venezuelensis) 2.19 ± 0.69 -
Time × Primary spp. (S. ratti) 2.64 ± 0.85 12.64 <0.01
IgG1 −0.320 ± 0.184 0.23 0.63
Time × IgG1 0.686 ± 0.297 4.99 <0.05
IL4 c Intercept 1.28 ± 0.42
Time (Day 21 p.s.i.) −3.26 ± 0.73 7.40 <0.01
Secondary dose (750 iL3s) 0.988 ± 0.261 14.66 <0.001
Primary spp. (S. ratti) 1.57 ± 0.63 1.08 0.30
Time × Primary spp. (S. ratti) 2.13 ± 0.94 5.50 <0.05
IL4 MLN −1.30 ± 0.43 1.015 0.31
Time × IL4 MLN 2.23 ± 0.54 19.17 <0.001
IL13 d Intercept 3.16 ± 0.23
Time (Day 21 p.s.i.) −5.02 ± 0.62 7.40 <0.01
Secondary dose (750 iL3s) 0.724 ± 0.163 19.10 <0.001
Primary spp. (S. ratti) −0.510 ± 0.170 1.08 0.30
Time × Primary spp. (S. ratti) 3.46 ± 0.58 42.55 <0.001
IL13 MLN −0.479 ± 0.152 0.41 0.52
Time × IL13 MLN 2.07 ± 0.53 16.25 <0.001
a

Likelihood ratio test presented for deletion of individual terms. For factors, tests refer to simultaneous deletion of all factor levels.

b

2 × log-likelihood = −555.89 with 38 residual degrees of freedom, overdispersion parameter k = 3.18 ± 0.73

c

2 × log-likelihood = −168.595 with 10 residual degrees of freedom, overdispersion parameter k = 3.18 ± 0.73

d

2 × log-likelihood = −106.54 with 6 residual degrees of freedom, overdispersion parameter k = 33.1 ± 18.9