Table 4.
Lag effects of per IQR increase in air pollutant on allergic conjunctivitis with subgroup analysis.
| Characteristics | PM 2.5 | PM 10 | CO | NO 2 | SO 2 | O 3 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lag effects RRs (95% CI) | ||||||||||||
| Single | Cumulative | Single | Cumulative | Single | Cumulative | Single | Cumulative | Single | Cumulative | Single | Cumulative | |
| Sex | ||||||||||||
| Male | 1.113 (0.932–1.331) | 1.174 (0.718–1.920) | 1.057 (0.970–1.153) | 0.917 (0.694–1.212) | 0.943 (0.844–1.055) | 1.220 (0.843–1.765) | 1.039 (0.958–1.126) | 1.168 (0.825–1.654) | 0.968 (0.913–1.027) | 1.057 (0.843–1.327) | 0.782 (0.565–1.083) | 0.540 (0.317–0.923) * |
| Female | 1.080 (0.985–1.184) | 1.227 (0.789–1.908) | 1.057 (0.970–1.153) | 1.388 (1.065–1.811) * | 1.040 (0.944–1.145) | 1.275 (0.866–1.877) | 1.039 (0.958–1.126) | 1.354 (0.999–1.834) | 0.976 (0.931–1.023) | 0.941 (0.748–1.183) | 0.782 (0.565–1.083) | 0.812 (0.598–1.102) |
| Age (years) | ||||||||||||
| 0–1 | 1.936 (1.094–3.428) * | 5.571 (1.951–15.904) ** | 1.333 (1.105–1.608) ** | 4.047 (1.521–10.769) ** | 0.055 (0.007–0.411) | 0.055 (0.007–0.411) | 0.147 (0.033–0.657) | 0.078 (0.012–0.481) | 0.976 (0.931–1.023) | 0.767 (0.312–1.890) | 3.718 (1.433–9.643) ** | 3.718 (1.433–9.643) ** |
| 2–5 | 1.181 (0.913–1.527) | 1.667 (0.704–3.947) | 1.086 (0.922–1.28) | 0.767 (0.441–1.336) | 0.847 (0.578–1.242) | 1.925 (0.899–4.126) | 0.578 (0.321–1.038) | 0.578 (0.321–1.038) | 1.094 (0.885–1.351) | 1.132 (0.747–1.716) | 0.591 (0.342–1.021) | 0.262 (0.113–0.607) |
| 6–18 | 1.091 (0.895–1.331) | 0.793 (0.439–1.433) | 1.126 (0.990–1.280) | 1.810 (1.164–2.815) ** | 1.186 (0.778–1.806) | 1.925 (0.899–4.126) | 1.198 (0.843–1.703) | 1.247 (0.815–1.908) | 0.947 (0.877–1.022) | 0.745 (0.540–1.029) | 0.910 (0.774–1.069) | 0.547 (0.282–1.061) |
| 19–64 | 0.956 (0.879–1.040) | 1.247 (0.805–1.934) | 1.093 (1.012–1.179) * | 1.182 (0.908–1.537) | 1.086 (0.911–1.295) | 1.238 (0.833–1.840) | 1.072 (1.001–1.148) * | 1.312 (0.960–1.794) | 0.974 (0.926–1.024) | 0.945 (0.737–1.212) | 0.858 (0.627–1.173) | 0.858 (0.627–1.173) |
| ≥65 | 0.666 (0.229–1.935) | 0.595 (0.185–1.909) | 1.169 (1.023–1.336) * | 2.905 (1.233–6.844) * | 1.242 (1.006–1.534) * | 0.653 (0.262–1.626) | 1.205 (1.031–1.410) * | 2.104 (0.913–4.847) | 1.217 (1.053–1.406) ** | 1.777 (0.987–3.201) | 0.421 (0.170–1.042) | 0.404 (0.086–1.905) |
| Season | ||||||||||||
| Warm (April to September) | 1.046 (0.967–1.132) | 0.908 (0.715–1.154) | 1.100 (1.025–1.181) ** | 0.828 (0.603–1.137) | 1.036 (0.988–1.087) | 0.925 (0.776–1.102) | 1.068 (0.980–1.165) | 1.730 (1.074–2.787) * | 1.021 (0.967–1.078) | 1.043 (0.882–1.233) | 0.669 (0.492–0.910) | 0.497 (0.314–0.785) |
| Cold (October to March) | 0.881 (0.807–0.962) | 1.386 (0.769–2.498) | 0.962 (0.906–1.021) | 0.808 (0.530–1.234) | 0.878 (0.803–0.961) | 0.548 (0.326–0.921) | 0.751 (0.625–0.902) | 0.620 (0.389–0.986) | 0.814 (0.687–0.965) | 0.704 (0.379–1.305) | 0.781 (0.626–0.975) | 0.497 (0.314–0.785) |
Bolded represents statistically significant correlation.
RRs, relative risks; *P < 0.05, **P < 0.01.