Characteristics | Italian prevalence (%) | 5.000 enrollments (n°) | 10.000 enrollments (n°) | 15.000 enrollments (n°) |
---|---|---|---|---|
Sex (% male) [25] | 51.3 | 2565 | 5130 | 7695 |
Gestational age at birth [25] | ||||
• < 37 weeks | 6.9 | 345 | 690 | 1035 |
• 37–40 weeks | 92.3 | 4615 | 9230 | 1385 |
• > 40 weeks | 0.9 | 45 | 90 | 135 |
Twins/multiple birth [25] | 1.7 | 85 | 170 | 255 |
Live birth rate after medically assisted procreation [25] | 2.14 | 107 | 214 | 321 |
Birth defects [26] | 2.0 | 100 | 200 | 300 |
Language disorders Age 3.5 years [27] | 7.5 | 375 | 750 | 1125 |
Maternal smoking during pregnancy [28] | 7 | 350 | 700 | 1050 |
Breastfeeding (exclusive) [29] | ||||
• Until age 6 months | 42.7 | 2135 | 4270 | 6405 |
• 6–12 months | 5.5 | 275 | 550 | 825 |
Parental history of atopy [30] | 22–37 | 1100–1850 | 2200–3700 | 3300–5550 |
Eczema prevalence Age 36 months-5 years [30] | 21.0 | 1050 | 2100 | 3150 |
Wheezing prevalence | 25.2 | 1260 | 2520 | 3780 |
Overweight prevalence Age 2–6 years [33] | 16 | 800 | 1600 | 2400 |