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. 2008 Feb 21;336(7644):594–597. doi: 10.1136/bmj.39465.544028.AE

Table 2.

 Unadjusted means* of Griffiths developmental quotient for all combinations of groups in factorial design

Antioxidants Folinic acid Total
Yes No
Yes: (Group A; n=36) (Group B; n=37) (Group A+B; n=73)
 Mean GQ 58.7 (9.3) 57.4 (9.8) 58.0 (1.1)
No: (Group C; n=32) (Group D; n=33) (Group C+D; n=65)
 Mean GQ 57.8 (11.9) 56.1 (9.8) 56.9 (1.3)
Total: (Group A+C; n=68) (Group B+D; n=70) (Group A+B+C+D; n=138)
 Mean GQ 58.3 (1.3) 56.8 (1.2) 57.5 (0.9)

GQ=general quotient; group A=antioxidants and folinic acid; group B=antioxidants only; group C=folinic acid only; group D=placebo.

*Standard deviations in parentheses for individual group entries; standard errors shown for entries for totals.