Table 1

Comparison of matching and other variables: temperature analysis

IUGR (n = 64)Controls (n = 127)
Values are mean (SD) or percentages.
IUGR, Intrauterine growth retarded; IIIn, social class III, non-manual; IIIm, social class III, manual.
Matched factors
    Sex (male)46%44%
    Feeding (breast)48%45%
    Maternal smoking (yes)54%47%
    Social class
        I or II21%30%
        IIIn or IIIm52%46%
        IV or less29%24%
Unmatched factors
    Maternal age (years)27.8 (5.0)28.6 (4.8)
    Gestation (weeks)38.7 (1.5)39.8 (1.5)
    Birth weight (g)2663 (453)3448 (506)