Table 1.

Characteristics of Isle of Wight and Born Into Life cohorts comparing included and not included subjects

	F2-Generation of Isle of Wight Cohort (n=542)			Born Into Life Cohort (n= 107)
	Analyzed (n=122)	Total (n=542)	P value	Analyzed (n=33)	Total (n=107)	P value
Newborns	122	542	_	33	107	_
Mothers	114	331		33	107
Newborn’s gender
Male	52%	55%	0.7	33%	57%	0.5
Female	48%	45%		67%	43%
Newborn’s birthweight (grams)	3453.6±491.5	3400.0 (710.0)	0.1	3525.0 ± 560.5	3531.3 ± 497.8	0.9
Maternal age (year)	23.8±2.4	24.3 (5.3)	0.1	32.8±3.8	32.5±3.7	0.74
Maternal BMI	25.2 (6.6)	25.2 (9.0)	0.8	23.1 (3.6)	23.0 (3.3)	0.8
Maternal parity
1	62%	55%	0.7	73%	66%	0.8
2	25%	31%		27%	27%
3	11%	11%			5%	0.8
4	2%	3%			2%
Maternal smoking during				0	0	-
pregnancy
No smoking	61%	64%	0.7
Light smoking	19%	16%
Moderate smoking	20%	20%
Socioeconomic status
Low	17%	19%	0.8	7%	9%	0.7
Medium	71%	68%		89%	88%
High	12%	13%		4%	3%

Data showed as mean± standard deviation for normally distributed and median (interquartile range) for non-normally distributed variables.