| LISA and GINI | PIAMA | Wilcoxon test p-value | |
| Subjects n | 358# | 332 | |
| Child's mattress dust load | |||
| Amount of dust mg·m−2 | 0/257 (139–471) | 0/247 (148–366) | 0.322 |
| Endotoxin EU·m−2 | 2/3053 (1521–6015) | 0/2356 (1461–4208) | 0.003 |
| (1,3)-β-d-glucan μg·m−2 | 0/421 (238–865) | 0/380 (199–625) | 0.002 |
| EPS EPSU·m−2 | 6/1008 (4458–25904) | 5/8257 (3890–17310) | 0.026 |
| Child's mattress dust concentration | |||
| Endotoxin EU·g−1 | 2/12222 (7379–21337) | 0/10608 (6550–17366) | 0.021 |
| (1,3)-β-d-glucan μg·g−1 | 0/1859 (1277–2396) | 0/1662 (1135–2205) | 0.002 |
| EPS EPSU·g−1 | 6/40792 (24235–65371) | 5/34696 (20364–58156) | 0.021 |
| Living-room floor dust load | |||
| Amount of dust mg·m−2 | 0/200 (52–523) | 22/104 (31–564) | 0.040 |
| Endotoxin EU·m−2 | 14/3749 (1034–10212) | 23/2299 (441–14224) | 0.126 |
| (1,3)-β-d-glucan μg·m−2 | 0/445 (114–1267) | 7/177 (59–1417) | 0.024 |
| EPS EPSU·m−2 | 28/8113 (1076–32188) | 70/2009 (154–33251) | <0.001 |
| Living-room floor concentration | |||
| Endotoxin EU·g−1 | 14/19400 (10104–32678) | 23/18196 (9522–32106) | 0.451 |
| (1,3)-β-d-glucan μg·g−1 | 0/2229 (1703–3114) | 7/2137 (1519–2994) | 0.130 |
| EPS EPSU·g−1 | 28/39344 (18290–76367) | 70/20330 (3896–61555) | <0.001 |
Data are presented as n/median (interquartile range), where n is the number of values below the limit of detection, unless otherwise stated. Bold indicates statistically significant p-values. LISA: Lifestyle Related Factors on the Immune System and the Development of Allergies in Childhood; GINI: German Infant Nutritional Intervention; PIAMA: Prevention and Incidence of Asthma and Mite Allergy; EU: endotoxin units; EPS: extracellular polysaccharide; EPSU: EPS units. #: two subjects more than in 9 (n = 356).