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Table 3 Pooled estimates for the relative riska with 95% confidence intervals of daily medical consultations for pollinosis in association with a 10-μg/m3 increase in mean suspended particulate matter, by the presence of AD

From: Association of Asian Dust with daily medical consultations for pollinosis in Fukuoka City, Japan

Lag period for SPMb (A)
AD-affected days
(B)
AD-free days
P-value for (A) – (B)
RR 95% CI RR 95% CI
Lag 0 0.972 0.931 1.015 1.004 0.983 1.025 0.19
Lag 1 1.000 0.963 1.039 1.005 0.986 1.025 0.84
Lag 2 1.032 0.996 1.070 1.017 0.998 1.037 0.49
Lag 3 1.028 0.988 1.071 1.038 1.018 1.059 0.69
Lag 4 1.038 1.001 1.076 1.026 1.010 1.042 0.58
Lag 5 1.060 1.011 1.111 1.023 1.007 1.038 0.15
Lag 6 0.999 0.942 1.060 1.014 0.993 1.035 0.66
Lags 0–5
 All clinics 1.066 1.007 1.127 1.062 1.022 1.104 0.94
 Except Clinic IV 1.071 1.011 1.135 1.055 1.014 1.097 0.68
  1. AD Asian Dust, SPM suspended particulate matter, RR relative risk, CI confidence interval
  2. aUsing single-lag model with adjustment for the day of the week, public holidays, month, year, the natural cubic splines of daily mean temperature, relative humidity and pollen (lag 0–5) with 3° of freedom. An interaction term between SPM and pollen concentration was included. Refer to Additional file 2: Table S2 for further information
  3. bDelayed effects longer than 1 day were constrained as average