Table 5.

Counts of unique individuals for calculating the odds ratios representing cross-sectional and prospective cohort samples for males and females

Groups	Cell*	Males	Females	Total
Whole sample
Neither	a	272,120	320,535	592,655
Asthma	b	60,336	86,740	147,076
ADHD	c	12,249	5,492	17,741
Both	d	7,429	3,559	10,988
	Total	352,134	416,326	768,460
Whole sample <22 years
Neither	a	88,956	98,900	187,856
Asthma	b	31,440	35,865	67,305
ADHD	c	10,981	4,229	15,210
Both	d	7,058	2,948	10,006
	Total	138,435	141,942	280,377
Cohort <5 years
Neither	a	133,672	139,023	272,695
Asthma	b	4,426	2,780	7,206
ADHD	c	254	116	370
Both	d	83	23	106
	Total	138,435	141,942	280,377
Cohort <22 years
Neither	a	133,672	139,023	272,695
Asthma	b	4,426	2,780	7,206
ADHD	c	254	116	370
Both	d	83	23	106
	Total	138,435	141,942	280,377

^*a, b, c, d, represent cell values for calculating cohort sample odds ratio (OR)=(ad)/(bc).

ADHD: attention deficit hyperactivity disorder