Table 3.
Factors associated with RSV pre-F IgG antibodies among children aged <5 years and elderly adults aged ≥60 years.
| Characteristics | β (95% CI) | Fold changes (10β-1, 95% CI) | P value |
|---|---|---|---|
|
| |||
| Children aged <5 years | |||
| Age, years | |||
| Contiguous age | 0.459 (0.253, 0.665) | 1.877 (0.790, 3.625) | <0.001 |
| Location of residence | |||
| Jiangnan town | Reference | Reference | - |
| Tianzhuang town | −0.166 (−0.856, 0.523) | −0.318 (−0.861, 2.336) | 0.637 |
| Qingtang town | −0.488 (−1.009, 0.032) | −0.675 (−0.902, 0.077) | 0.068 |
| Household size | |||
| 2-4 | Reference | Reference | - |
| >4 | 0.265 (−0.113, 0.644) | 0.841 (−0.230, 3.401) | 0.172 |
| Use of daycare | |||
| Yes | −0.020 (−0.531, 0.492) | −0.045 (−0.706, 2.101) | 0.940 |
| No | Reference | Reference | - |
| Elderly adults aged ≥60 years | |||
| Age, years | |||
| Contiguous age | −0.003 (−0.013, 0.006) | −0.008 (−0.030, 0.015) | 0.493 |
| Location of residence | |||
| Jiangnan town | Reference | Reference | - |
| Tianzhuang town | −0.092 (−0.219, 0.034) | −0.192 (−0.396, 0.082) | 0.154 |
| Qingtang town | −0.052 (−0.272, 0.168) | −0.113 (−0.466, 0.474) | 0.645 |
| Household size | |||
| 2-4 | Reference | Reference | - |
| >4 | 0.081 (−0.053, 0.215) | 0.205 (−0.114, 0.639) | 0.237 |
| Underlying diseases | |||
| No | Reference | Reference | - |
| Yes | 0.011 (−0.107, 0.129) | 0.026 (−0.218, 0.347) | 0.853 |
We quantified RSV pre-F IgG antibodies using log10 endpoint titres. β > 0 indicates that the factor was associated with an increase in RSV pre-F IgG antibodies by 10β-1 fold; β < 0 indicates that the factor was associated with a decrease in RSV pre-F IgG antibodies by 1-10β fold.