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)
TDS quartile 1 (least deprived) TDS quartile 2 TDS quartile 3 TDS quartile 4 (most deprived)
Birthweighta
1961–1970 Ref –43.5 (–61.7, –25.2) –69.5 (–88.5, –50.5) –113.4 (–133.0, –93.8)
1971–1980 Ref –35.6 (–50.6, –20.6) –71.7 (–87.2, –56.3) –109.0 (–125.0, –93.0)
1981–1990 Ref –29.0 (–42.5, –15.5) –71.5 (–85.7, –57.3) –103.8 (–118.7, –89.0)
1991–2000 Ref –42.9 (–57.0, –28.7) –89.3 (–104.3, –74.4) –97.5 (–113.0, –82.0)
Low birthweighta
1961–1970 Ref 1.4 (1.2, 1.7) 1.6 (1.3, 1.9) 1.7 (1.5, 2.1)
1971–1980 Ref 1.1 (0.9, 1.3) 1.4 (1.1, 1.6) 1.5 (1.3, 1.8)
1981–1990 Ref 1.2 (1.0, 1.5) 1.4 (1.2, 1.7) 1.8 (1.5, 2.1)
1991–2000 Ref 1.3 (1.1, 1.6) 1.6 (1.4, 1.9) 1.6 (1.3, 1.9)
Preterm birthb
1961–1970 Ref 1.1 (0.9, 1.2) 1.1 (0.9, 1.3) 1.1 (0.9, 1.3)
1971–1980 Ref 1.1 (0.9, 1.3) 1.3 (1.1, 1.5) 1.5 (1.3, 1.7)
1981–1990 Ref 1.2 (1.0, 1.4) 1.6 (1.4, 1.8) 1.8 (1.6, 2.1)
1991–2000 Ref 1.1 (0.9, 1.3) 1.3 (1.2, 1.5) 1.5 (1.3, 1.7)

aAdjusted for gestational age, maternal age, parity and infant sex.

bAdjusted preterm birth models did not include gestational age.

Glinianaia et al.

Glinianaia et al. BMC Public Health 2013 13:345   doi:10.1186/1471-2458-13-345

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