Table:
characteristic
total
boys
girls

estimate
95% confidence interval
estimate
95% confidence interval
estimate
95% confidence interval

from
to
from
to
from
to

wear time
12.4
12.1
12.7
12.6
12.2
13.0
12.2
11.8
12.5

sedentary time
458
444
472
463
447
478
453
434
472

light physical activity
211
202
219
213
202
223
208
196
221

moderate-to-vigorous physical activity
75
70
80
81
77
85
68
62
74

total physical activity
287
276
298
295
282
308
278
261
294

total counts per day
292,597
275,272
309,922
313,668
296,800
330,536
269,777
246,713
292,842

average screen time
2.2
1.8
2.6
2.1
1.7
2.6
2.3
1.6
3.1

height
113.0
111.6
114.8
112.8
110.7
115.6
113.3
111.7
115.4

weight
21.0
20.0
22.2
21.2
20.1
22.8
20.6
19.5
22.1

body mass index
16.3
15.9
16.9
16.6
16.1
17.3
15.9
15.4
16.7

household income

$0 to $39,999
19.2
12.0
26.5
23.8
13.5
34.0
f
..
..

$40,000 to $79,999
32.7
21.1
44.3
32.4
19.4
45.4
33.0
16.0
50.1

$80,000 or more
48.0
38.9
57.2
43.8
32.5
55.1
52.6
41.8
63.4

highest level of education in household

secondary graduation or less
10.8
5.6
16.0
14.9
7.3
22.5
f
..
..

at least some postsecondary, less than bachelor's degree
40.8
30.6
50.9
31.6
19.3
43.9
50.7
36.2
65.2

bachelor's degree
29.2
20.6
37.8
31.2
16.8
45.6
27.0
20.5
33.6

university degree or certificate above bachelor's degree
17.7
8.7
26.8
22.0
11.2
32.7
f
..
..

body mass index category

healthy weight
68.7
58.9
78.5
67.4
54.4
80.4
70.1
59.4
80.8

overweight or obese
31.3
21.5
41.1
32.6
19.6
45.6
29.9
19.2
40.6

single-child household

yes
18.4
10.8
26.1
12.9
5.6
20.2
24.4
11.2
37.6

mother's age at birth of child

younger than 30
38.1
26.7
49.4
45.7
34.5
56.8
29.8
15.0
44.6

30 to 34
29.2
22.0
36.5
25.4
16.9
33.9
33.4
20.1
46.7

35 or older
30.4
19.7
41.1
24.5
11.8
37.2
36.8
22.0
51.5

Statement: the total five-year-olds wore the accelerometer an average of 12 hours and 24 minutes on valid days.
Question: how many hours did the total five-year-olds wore the accelerometer on valid days?
Answer: [12.4]