Test-retest reliability of a new questionnaire on the diet and eating behavior of one year old children

BMC Research Notes

Table 8 Mean correlation coefficients for variables, by category

Variable category (number of questions)	Mean Spearman’s r	SD	Mean Cohen’s kappa ¹	SD
Non-numeric variables² (14)			0.75	0.21
Scale variables³ (7)	0.86	0.10	0.74	0.12
Food frequency, all items (63)	0.72	0.17	0.59	0.18
Beverages (17)	0.75	0.20	0.64	0.23
Breakfast/lunch foods (18)	0.70	0.13	0.51	0.13
Dinner foods (15)	0.65	0.13	0.59	0.11
Desserts/snacks (9)	0.75	0.21	0.68	0.22
Supplements (4)	0.90	0.05	0.76	0.10
Meal pattern⁴ (13)	0.58	0.15	0.44	0.11

¹Scale and frequency variables were ranked into quartile categories for calculating Cohen’s kappa. ²breastfeeding status, reasons for breastfeeding cessation, whether the child feeds her/himself and how the child drinks liquids. ³age in months at weaning from breast, introduction of other milks and complementary foods; relative frequency of reading labels on food. ⁴weekly frequencies of foods, daily meals, meals eaten together with at least one parent, and meals out. SD included to show central tendency. All correlation measures significant at p ≤ 0.001.

ISSN: 1756-0500