Table 2.

Caffeine intake (mg) on a given day for caffeine consumers (ages 6–11 years) overall and by screen time variables*

	n†	Median	25th percentile	75th percentile	90th percentile	95 percentile	P values‡
All	2425	10.2	3.1	38.2	73.2	112.1
Total screen time							NS
<2 hours	559	8.2	2.8	30.4	56.7	84.4
≥2 hours	1760	11.6	3.3	41.3	79.7	116.0
Television watching							0.04
<2 hours	781	8.3	2.8	31.1	64.6	96.9
≥2 hours	1538	12.1	3.3	42.3	76.0	115.9
Computer use							NS
<2 hours	1866	9.9	3.0	36.6	66.9	96.6
≥2 hours	454	12.3	3.9	45.1	98.2	128.2

*Medians and percentiles were calculated from untransformed weighted data; 5th and 10th percentiles are not presented and were essentially equal to zero because of a high proportion of children who did not consume any caffeine.

†Unweighted n.

‡All statistical tests were performed on log-transformed means.