Table 2.

IQ at 8 years of age (unadjusted, without imputation) according to maternal dietary clusters during pregnancy

		IQ data		Fruit and vegetables		Meat and potatoes		White bread and coffee
	n	Mean (SD)	n	Mean (SD)	n	Mean (SD)	n	Mean (SD)	p valuea
Verbal IQ	6,582	107.5 (16.7)	2,758	111.6 (16.7)b	1,385	106.6 (16.1)c	2,439	103.3 (16.0)d	<.001
Performance IQ	6,572	99.9 (17.1)	2,751	102.9 (16.8)b	1,384	99.1 (17.0)c	2,437	97.1 (16.9)d	<.001
Full‐scale IQ	6,552	104.5 (16.4)	2,746	108.6 (16.1)b	1,378	103.5 (16.2)c	2,428	100.5 (15.9)d	<.001

Note. SD = standard deviation.

^a p values refer to analysis of variance test.

^{b, c, d} Where superscripts differ, there is a difference among variables according to the dietary clusters (Tukey–Kramer method).