Table 1.
Participant characteristics stratified by allergic rhinitis status
| Variable | No allergic rhinitis (n = 1180) | Allergic rhinitis (n = 261) | P |
|---|---|---|---|
| Demographics | |||
| Male, % (n) | 47% (560) | 51% (134) | 0.26 |
| Age, mean (SD) | 14.9 (0.9) | 14.9 (0.9) | 0.29 |
| % Living in Tumbes (n) | 53% (625) | 35% (91) | <0.001 |
| BMI in kg/m2, mean (SD) | 21.0 (3.2) | 21.9 (3.6) | <0.001 |
| HAZ < –2 Z-scores, % (n) | 15 (157) | 14 (32) | 0.77 |
| Socioeconomic status, % (n) | |||
| Monthly income <175 USD) | 45% (531) | 39% (102) | 0.08 |
| Maternal education >6 years | 73% (846) | 75% (196) | 0.47 |
| 6 or more household members | 39% (456) | 43% (111) | 0.25 |
| Concrete floor | 47% (561) | 42% (110) | 0.11 |
| Allergic conditions | |||
| Atopy, % (n) | 44% (450) | 61% (134) | <0.001 |
| Exhaled nitric oxide in ppb, mean (SD) | 17.0 (16.9) | 31.4 (35.9) | <0.001 |
| Total serum IgE in kU/L, geometric mean (geometric SD) | 211.1 (3.6) | 290.6 (4.2) | <0.001 |
| 25OH vitamin D in ng/dL, mean (SD) | 25.7 (8.9) | 24.5 (8.7) | 0.07 |
| Current asthma, % (n) | 4% (50) | 22% (56) | <0.001 |
| Eczema in last 12 months, % (n) | 5% (54) | 15% (39) | <0.001 |
| History of parental rhinitis, % (n) | |||
| None | 90% (1061) | 72% (189) | <0.001 |
| 1 parent | 9% (106) | 24% (63) | |
| Both parents | 1% (13) | 3% (9) | |
| Exposures | |||
| Personal history of smoking, % (n) | 4% (43) | 3% (15) | 0.13 |
| Second hand smoke, % (n) | 20% (235) | 16% (43) | 0.20 |