Distribution of the bio-contaminants (original scale)
| N | 1st quartile | Median | Geometric mean | 3rd quartile | IQR | |
| Endotoxin EU·mg−1 | ||||||
| Total | 1383 | 5.08 | 15.76 | 11.76 | 35.05 | 29.97 |
| PIAMA | 529 | 10.34 | 23.87 | 21.85 | 50.67 | 40.33 |
| INMA | 460 | 1.04 | 3.62 | 3.27 | 11.50 | 10.46 |
| LISAplus | 394 | 13.49 | 21.75 | 22.77 | 36.72 | 23.23 |
| (1,3)-β-d-glucan μg·mg−1 | ||||||
| Total | 907 | 1.19 | 1.87 | 1.75 | 2.65 | 1.45 |
| PIAMA | 512 | 1.04 | 1.67 | 1.62 | 2.74 | 1.70 |
| LISAplus | 395 | 1.47 | 2.00 | 1.91 | 2.55 | 1.08 |
| Extracellular polysaccharides EPSU·mg−1 | ||||||
| Total | 1362 | 26.37 | 53.36 | 53.61 | 108.00 | 81.67 |
| PIAMA | 514 | 14.64 | 29.68 | 30.03 | 56.67 | 42.03 |
| INMA | 453 | 66.02 | 109.60 | 115.07 | 184.10 | 118.10 |
| LISAplus | 395 | 27.86 | 45.36 | 47.46 | 78.96 | 51.10 |
| Endotoxin# EU·m−2 | ||||||
| Total | 987 | 0.20 | 1.16 | 1.16 | 7.49 | 8.68 |
| PIAMA | 527 | 0.89 | 5.45 | 4.29 | 23.44 | 22.55 |
| INMA | 459 | 0.06 | 0.25 | 0.25 | 1.26 | 1.21 |
| Extracellular polysaccharides#EPSU·m−2 | ||||||
| Total | 970 | 1.51 | 7.25 | 7.37 | 28.12 | 30.36 |
| PIAMA | 515 | 0.61 | 8.37 | 6.00 | 28.65 | 28.04 |
| INMA | 455 | 2.61 | 8.55 | 9.29 | 35.90 | 33.28 |
IQR: interquartile range; PIAMA: Prevention and Incidence of Asthma and Mite Allergy; INMA: INfancia y Medio Ambiente – Childhood and Environment; LISAplus: Influence of Life-style factors on the development of the Immune System and Allergies in East and West Germany. #: original values divided by 1000.