Table 3.
Test-retest study: Intra class correlation coefficients between two estimations of total energy expenditure measured at two different times, 6 weeks apart, over one year period in the random sample of 121 young students from Bogotá, 2001-2002.
| Categories | N | Intra-class correlation coefficient [95% CI] |
|---|---|---|
| All | 121 | .96 [.95 ; .97] |
| Age (years) | ||
| 8-10 | 41 | .94 [.89 ; .97] |
| 11-13 | 40 | .98 [.96 ; .99] |
| 14-16 | 40 | .95 [.91 ; .98] |
| Gender | ||
| Male | 56 | .98 [.96 ; .99] |
| Female | 65 | .95 [.91 ; .97] |
| School grade | ||
| Elementary School | 41 | .98 [.97 ; .99] |
| Secondary School | 80 | .94 [.91 ; .96] |
| Period activities | ||
| Vacation period | 121 | .97 [.96 ; .98] |
| School period | 121 | .96 [.94 ; .97] |
| Socio-economic strata (see map) | ||
| 1-2 | 46 | .94 [.90 ; .97] |
| 3-4 | 40 | .98 [.96 ; .99] |
| 5-6 | 35 | .99[.97 ; .99] |
| Activities | ||
| 1- Sleeping | 121 | .93[.91 ; .95] |
| 2- Toilet | 121 | .90[.87 ; .93] |
| 3- Meals | 121 | .97[.96 ; .98] |
| 4- Transportation | 121 | .84[.78 ; .89] |
| 5- Classroom | 121 | .97[.96 ; .98] |
| 6- Mandatory physical education | 121 | .95[.93 ; .97] |
| 7- Other activities in school | 121 | .94[.92 ; .96] |
| 8- Out school activities | 121 | .96[.94 ; 97] |
| 9- Religious activities | 121 | .93[.90 ; .95] |
| 10- Vacations | 121 | .97[.96 ; .98] |
| 11- Personal artistic activities | 121 | .98[.97 ; .99] |
| 12- Sport competition | 121 | .98[.97 ; .99] |
| 13- Home activities | 121 | .89[.85 ; .92] |