Table 1.
Socio-demographic characteristics of patients enrolled by type of infection.
| Pertussis | Rhinovirus | Co-infections | Total | P | |
|---|---|---|---|---|---|
| Male (n, %) | 13 (54.2) | 9 (64.3) | 12 (60) | 34 (58.6) | 0.82 |
| Age in months (mean, SD) | 2.0 (1.5) | 1.8 (1.3) | 2.7 (1.4) | 2.2 (1.5) | 0.10 |
| Caucasian (n, %) | 23 (95.8) | 14 (100) | 20 (100) | 57 (98.2) | 0.49 |
| Gestational age in weeks (mean, SD) | 38.3 (2.4) | 36.9 (3.7) | 38.4 (1.9) | 38.0 (2.7) | 0.61 |
| Premature birth (n, %) | 3 (12.5) | 5 (35.7) | 3 (15) | 11 (19) | 0.22 |
| Birth weight in kg (mean, SD) | 3.2 (0.7) | 2.8 (0.8) | 3.3 (0.6) | 3.1 (0.7) | 0.18 |
| Caesarean birth (n, %) | 8 (33.3) | 10 (71.4) | 11 (55) | 29 (50) | 0.07 |
| Chronic diseases (n, %) | 1 (4.8) | 2 (18.2) | 0 | 3 (5.9) | 0.16 |
| Exclusive breastfeeding (days) | 31.7 (35.4) | 21.6 (29.6) | 53.7 (63.4) | 37.1 (47.3) | 0.40 |
| Employed mother (n, %) | 16 (72.7) | 8 (72.7) | 10 (52.6) | 34 (65.4) | 0.39 |
| Employed father (n, %) | 20 (90.9) | 10 (90.9) | 19 (100) | 49 (94.2) | 0.42 |
| Mother with university degree (n, %) | 4 (23.5) | 2 (18.2) | 6 (30) | 12 (25.5) | 0.76 |
| Father with university degree (n, %) | 6 (37.5) | 4 (36.4) | 4 (21) | 14 (30.4) | 0.55 |
| No of Households (mean, SD) | 3.7 (0.6) | 4.2 (0.8) | 4.2 (1.3) | 4.0 (1.0) | 0.20 |
| At least one sibling (n, %) | 14 (58.3) | 12 (85.7) | 14 (70) | 40 (69) | 0.21 |
| Smoker mother (n, %) | 1 (5.6) | 4 (36.4) | 3 (15.8) | 8 (16.7) | 0.11 |
Data are reported as number and percentage, or as mean value and standard deviation (SD) reported in round brackets. Statistical significance was evaluated by Chi-square test or Fisher’s exact test for proportions and Kruskal–Wallis test for means.