. Author manuscript; available in PMC: 2015 Dec 14.

Published in final edited form as: Public Health Nutr. 2011 Feb 22;14(7):1165–1176. doi: 10.1017/S1368980010003058

Table 3.

Internal consistency, test–retest reliability and convergent validity for food behaviour checklist sub-scales for a sample of low-income Spanish-speaking women in California

Food behaviour sub-scale^†	Internal consistency (n 154)^‡	Test–retest reliability^§ (n 71)			Recall nutrient/other (n 82)
Food behaviour sub-scale^†	Internal consistency (n 154)^‡	r	95% CI	ICC	r	95% CI
Fruit and vegetables^∥	0·80	0·60^****	0·42, 0·73	0·63	0·20 (NS) (MyPyramid cups of fruit)	–0·02, 0·40
Dairy/calcium^¶	0·42	0·78^****	0·67, 0·86	0·81	0·26^* (protein, g)	0·04, 0·45
					0·25^* (vitamin A, RE)	0·03, 0·45
					0·38^*** (riboflavin, mg)	0·17, 0·55
					0·42^*** (vitamin D, μg)	0·22, 0·59
					0·43^**** (Ca, mg)	0·23, 0·59
					0·33^** (MyPyramid cups of dairy)	0·12, 0·51
Food security^††	N/A	0·48^****	0·27, 0·64	0·46	0·42^*** (USDA food security scale)	0·22, 0·59
Diet quality^‡‡	0·49	0·69^****	0·71, 0·88	0·71	–0·22^* (fat, % total kJ/kcal)	–0·42, 0·00
					–0·33^** (trans fat, % total kJ/kcal)	–0·51, –0·12
					–0·23^* (MyPyramid grains, oz-eq)	–0·43, –0·01
					–0·26^* (MyPyramid cups of dairy)	–0·45, –0·04
					–0·25^* (total sugars, g)	–0·45, –0·03
					–0·24^* (net CHO, g)	–0·44, –0·02
Fast food^§§	N/A	N/A	N/A	N/A	0·23^* (vitamin A, RE)	0·01, 0·43
					0·23^* (vitamin B₁₂, μg)	0·01, 0·43
Sweetened beverages^∥∥	0·26	0·55^****	0·36, 0·70	0·55	–0·33^** (fat, % total kJ/kcal)	–0·51, –0·12
					–0·37^*** (sat fat, % total kJ/kcal)	–0·55, –0·16
					–0·41^*** (total sugars, g)	–0·58, –0·21
					–0·44^**** (net CHO, g)	–0·60, –0·24
Total scale^¶¶	0·75	0·71^****	0·51, 0·78	0·74	N/A	N/A

r, Spearman's correlation coefficient; ICC, intraclass correlation coefficient; N/A, not applicable; RE, retinol equivalents; USDA, US Department of Agriculture; oz-eq, ounce-equivalents; CHO, carbohydrate; sat, saturated.

P < 0·05

^**

P < 0·01

^***

P < 0·001

^****

P < 0·0001.

NS: P > 0·05.

^†

Questions re-coded on 4-point scale with higher scores reflecting a healthier diet.

^‡

Cronbach's α for sub-scales with three or more items; Spearman's r for sub-scales with two items. Validity and reliability databases combined for a total sample size of 154.

^§

Test–retest reliability analysis excludes items that refer to the past week or yesterday.

^∥

Scale excludes citrus item.

^¶

Test–retest reliability includes only one item: drink milk.

^††

Food security item validated using the USDA Household Food Security Survey Module.

^‡‡

Scale includes the following items: eat fish in the past week, take skin off chicken, use food label when shopping and rate eating habits.

^§§

Scale includes the following items: fried snacks yesterday, fried food yesterday and fast food yesterday.

^∥∥

Scale includes the following items: drink fruit drinks, sport drinks or punch and drink regular soda.

^¶¶

Total scale excludes citrus item.