Table 2 Linear regression coefficients (95% confidence interval (95% CI)) for the change in birthweight and odds ratios (95% CI) for the change in the percentage of low birthweight and preterm birth by decade and by area deprivation group (Townsend deprivation score, TDS, quartile)

Ref

–43.5 (–61.7, –25.2)

–69.5 (–88.5, –50.5)

–113.4 (–133.0, –93.8)

Ref

–35.6 (–50.6, –20.6)

–71.7 (–87.2, –56.3)

–109.0 (–125.0, –93.0)

Ref

–29.0 (–42.5, –15.5)

–71.5 (–85.7, –57.3)

–103.8 (–118.7, –89.0)

Ref

–42.9 (–57.0, –28.7)

–89.3 (–104.3, –74.4)

–97.5 (–113.0, –82.0)

Ref

1.4 (1.2, 1.7)

1.6 (1.3, 1.9)

1.7 (1.5, 2.1)

Ref

1.1 (0.9, 1.3)

1.4 (1.1, 1.6)

1.5 (1.3, 1.8)

Ref

1.2 (1.0, 1.5)

1.4 (1.2, 1.7)

1.8 (1.5, 2.1)

Ref

1.3 (1.1, 1.6)

1.6 (1.4, 1.9)

1.6 (1.3, 1.9)

Ref

1.1 (0.9, 1.2)

1.1 (0.9, 1.3)

1.1 (0.9, 1.3)

Ref

1.1 (0.9, 1.3)

1.3 (1.1, 1.5)

1.5 (1.3, 1.7)

Ref

1.2 (1.0, 1.4)

1.6 (1.4, 1.8)

1.8 (1.6, 2.1)

Ref

1.1 (0.9, 1.3)

1.3 (1.2, 1.5)

1.5 (1.3, 1.7)