Table 3 Prevalence of IgG antibodies against parvovirus B19 by demographic characteristics in female day care workers (2007) in Amsterdam, The Netherlands, and in women of the Amsterdam population (2004)*
Characteristics | Study Sample | Parvovirus B19 IgG Positive | Univariable PR (95 % CI) | Multivariable PR (95% CI | ||||
|---|---|---|---|---|---|---|---|---|
N | n | % | p value | p value | p value | |||
Total | 540 | 356 | 65.9 % | |||||
Working in child day care | 0.003 | |||||||
No | 298 | 180 | 60.4 % | 1 | 1 | |||
Yes | 242 | 176 | 72.7 % | 1.2 (1.1–1.4) | 0.002 | 1.2 (1.1–1.4) | 0.002 | |
Age (in years) | 0.18 | |||||||
16–24 | 113 | 72 | 63.7 % | 1 | 1 | |||
25–34 | 199 | 141 | 70.9 % | 1.1 (1.0–1.3) | 0.2 | 1.1 (0.9–1.3) | 0.2 | |
35–44 | 228 | 143 | 62.7 % | 1.0 (0.8–1.2) | 0.9 | 1.0 (0.8–1.3) | 0.7 | |
Country of birth | 0.75 | |||||||
The Netherlands & Other European countries | 319 | 212 | 66.5 % | 1 | 1 | |||
Non-European countries** | 221 | 144 | 65.2 % | 1.0 (0.9–1.1) | 0.73 | 1.1 (0.9–1.5) | 0.08 | |
Age at immigration | 0.12 | |||||||
0–17 years | 97 | 71 | 73.2 % | 1 | ||||
18 and older | 141 | 88 | 62.4 % | 0.9 (0.7–1.0) | 0.07 | |||
Data missing | 8 | 3 | 37.5 % | – | ||||
Not applicable (born in the Netherlands) | 294 | 194 | 66.0 % | – | ||||
Having children | 0.09 | |||||||
No | 177 | 114 | 64.1 % | 1 | 1 | |||
Yes | 293 | 203 | 69.3 % | 1.1 (0.9–1.2) | 0.27 | 1.2 (1.0–1.3) | 0.02 | |
Data missing | 70 | 39 | 55.7 % | – | – | |||
Number of children | 0.24 | – | ||||||
0 | 177 | 114 | 64.4 % | 1 | ||||
1 | 104 | 73 | 70.2 % | 1.1 (0.9–1.3) | 0.26 | |||
2 | 113 | 80 | 70.8 % | 1.1 (0.9–1.3) | 0.28 | |||
3 | 76 | 50 | 65.8 % | 1.0 (0.8–1.2) | 0.82 | |||
Number of children missing | 70 | 39 | 55.7 % | – | ||||