Table 4.
Spearman’s rank correlation coefficients calculated for concentration of total carotenoids in plasma and recorded vegetable intake in a web-based food recall (WebFR) among 4th graders (8–9 years) and 8th graders (12–14 years) in Norway (n 261), September–December 2013
| n | r | P * | |
|---|---|---|---|
| All participants | 261 | 0·28 | |
| Age group | 0·003 | ||
| 4th grade (8–9 years) | 121 | 0·47 | |
| 8th grade (12–14 years) | 140 | 0·14 | |
| Sex | 0·92 | ||
| Girls | 145 | 0·28 | |
| Boys | 116 | 0·29 | |
| ISO-BMI cut-off categories | 0·36 | ||
| Normal weight | 224 | 0·30 | |
| Overweight or obese | 37 | 0·13 | |
| Parental education level | 0·25 | ||
| Both low† | 31 | 0·10 | |
| At least one high‡ | 203 | 0·32 | |
| Parental ethnicity | 0·32 | ||
| At least one parent/guardian of Norwegian origin | 223 | 0·32 | |
| Both parents/guardians of other ethnic origin than Norwegian (all other countries) | 33 | 0·13 |
*
Fisher’s Z-test was used to compare the correlation coefficient between groups.
†
Both parents/guardians’ education is maximum high school level.
‡
At least one parent/guardian’s education is university-college or university level.