Table 5.
Association between urinary 8-OHdG levels and atopic phenotypes restricted to participants of controls (n = 200).
| Urinary 8-OHdG Levels (ng/mg Cr) | Total | Number of Atopic Phenotypes (%) | Adjusted OR | p-Value |
|---|---|---|---|---|
| n = 200 | (95% CI) | |||
| Asthma | 0.67 | |||
| Q1: <14.94 | 50 | 1 (2.0%) | 1 (reference) | |
| Q2: 14.94–21.24 | 50 | 0 (0.0%) | 0 (0-na) | |
| Q3: 21.24–34.18 | 50 | 2 (4.0%) | 4.01 (0.16–103) | |
| Q4: >34.18 | 50 | 1 (2.0%) | 0.79 (0.03–23.0) | |
| Allergic rhinitis | 0.35 | |||
| Q1: <14.94 | 50 | 2 (4.0%) | 1 (reference) | |
| Q2: 14.94–21.24 | 50 | 0 (0.0%) | 0 (0-na) | |
| Q3: 21.24–34.18 | 50 | 3 (6.0%) | 3.53 (0.28–44.7) | |
| Q4: >34.18 | 50 | 3 (6.0%) | 3.27 (0.26–42.0) | |
| Night pruritus | >0.99 | |||
| Q1: <14.94 | 50 | 1 (2.0%) | 1 (reference) | |
| Q2: 14.94–21.24 | 50 | 0 (0.0%) | 0 (0-na) | |
| Q3: 21.24–34.18 | 50 | 0 (0.0%) | 0 (0-na) | |
| Q4: >34.18 | 50 | 1 (2.0%) | 1.98 (0.04–104) |
Abbreviations: CI, confidence interval; OR, odd ratio; na: not available; Q1: 0–25th percentiles; Q2: 25–50th percentiles; Q3: 50–75th percentiles; Q4: >75th percentiles; OR was adjusted by age, gender, daycare <1-year-old, preterm birth <37 weeks, family income (<USD $20,000/USD $20,000–33,300/≥USD $33,300), duration of breast feeding <6 months/≥6 months), tobacco smoke exposure during pregnancy, and parental history of atopy.