Table 2

Associations between respiratory outcomes and home proximity to a main road by age group

2–6 years7–15 years16+ years
No (%)Adjusted OR* (95% CI)p Value†No (%)Adjusted OR* (95% CI)p Value†No (%)Adjusted OR* (95% CI)p Value†
Wheeze in last year
⩽150 m220 (20.2)0.98 (0.82 to 1.17)0.80298 (15.4)0.85 (0.74 to 0.99)0.042813 (20.0)0.93 (0.88 to 0.98)0.01
>150 m499 (20.7)1714 (17.5)15715 (20.8)1
Bands of distance
    <30 m33 (17.6)0.92 (0.55 to 1.53)0.6064 (17.6)1.62 (1.06 to 2.49)0.04522 (18.5)0.92 (0.08 to 1.06)0.22
    30–60 m30 (21.7)1.18 (0.70 to 2.01)48 (16.9)1.52 (0.98 to 2.36)450 (19.9)0.97 (0.84 to 1.13)
    60–90 m48 (19.1)0.99 (0.64 to 1.54)62 (15.3)1.38 (0.91 to 2.10)617 (21.4)1.06 (0.93 to 1.21)
    90–120 m61 (23.5)1.32 (0.86 to 2.04)76 (16.2)1.46 (0.99 to 2.17)646 (20.4)1.01 (0.88 to 1.15)
    120–150 m48 (19.2)148 (11.7)1578 (20.0)1
Diagnosed asthma
⩽150 m205 (18.9)0.94 (0.78 to 1.13)0.53411 (21.2)0.92 (0.80 to 1.05)0.201798 (12.8)1.01 (0.95 to 1.07)0.76
>150 m471 (19.6)1923 (22.7)13452 (12.6)1
Bands of distance
    <30 m37 (19.7)1.17 (0.71 to 1.93)0.6588 (24.2)1.35 (0.95 to 1.91)0.29349 (12.4)0.99 (0.84 to 1.17)0.81
    30–60 m25 (18.1)1.05 (0.59 to 1.86)57 (20.0)1.03 (0.69 to 1.54)283 (12.5)1.00 (0.84 to 1.18)
    60–90 m47 (18.7)1.04 (0.66 to 1.64)80 (19.8)1.04 (0.72 to 1.51)420 (14.6)1.17 (1.01 to 1.36)
    90–120 m51 (19.6)1.12 (0.70 to 1.79)107 (22.8)1.24 (0.88 to 1.73)381 (12.0)0.95 (0.82 to 1.11)
    120–150 m45 (18.0)179 (19.2)1365 (12.6)1
COPD
⩽150 mnananananana1418 (12.7)0.96 (0.89 to 1.03)0.21
>150 m2825 (13.0)1
Bands of distance
    <30 mnananananana270 (12.0)0.94 (0.77 to 1.13)0.54
    30–60 m242 (13.5)0.97 (0.80 to 1.18)
    60–90 m290 (12.7)0.94 (0.78 to 1.14)
    90–120 m321 (12.8)0.97 (0.81 to 1.17)
    120–150 m295 (12.7)1
  • *OR, odds ratios adjusted for sex and Townsend quintiles and, in adults, also for groups of age and smoking status.

  • †p Value of Wald test for association in ⩽150 m versus 150 m effects and for trend in bands of distance effects.

  • na, not applicable.