Table 2.

Mean daily servings of fruits and vegetables from two 24 h dietary recalls and the BRFSS FV module, and corresponding deattenuated Pearson correlation coefficients between the two methods, among African-American women (n 260) aged 35–65 years, south-west Georgia, USA, February 2011–December 2012

		24 h recalls†		BRFSS FV module		Difference‡
Group	n	Mean	sd	Mean	sd	Mean	sd	Deattenuated correlation coefficient, r
All	260	2·66	2·66	2·79	1·88	0·12	2·93	0·22***
Weight category
Overweight	30	2·06	1·53	2·90	2·39	0·83	2·15	0·53**
Class I and II obese	127	2·87	3·22	2·89	1·86	0·02	3·42	0·19*
Class III obese	103	2·58	2·09	2·63	1·74	0·05	2·42	0·23*
Education
Less than high-school diploma or GED	56	2·17	1·93	2·51	1·85	0·33	2·61	0·05
High school or GED	96	2·92	3·27	2·78	1·99	−0·13	3·56	0·16
Some college/technical school	76	2·54	2·55	2·72	1·73	0·18	2·50	0·45***
College graduate	31	3·08	1·84	3·51	1·84	0·43	2·36	0·18
Age (years)
35–45	80	2·62	2·60	2·82	1·99	0·20	2·83	0·32**
45–55	101	2·72	2·18	2·87	2·06	0·15	2·54	0·32**
55–65	79	2·64	3·26	2·65	1·51	0·01	3·49	0·07
Employment status
Not employed	143	2·59	2·00	2·78	1·91	0·18	2·49	0·25**
Employed	117	2·75	3·31	2·80	1·85	0·05	3·41	0·20*

BFRSS FV module, Behavioral Risk Factor Surveillance System’s Fruit and Vegetable Consumption Module; GED, General Educational Development.

*P<0·05, **P<0·01, ***P<0·001.

^†The average fruit and vegetable intake as assessed with the 24 h dietary recalls was slightly higher (2·82) when including French fries; the deattenuated correlation coefficient was slightly smaller (0·22).

^‡Difference was calculated by subtracting the 24 h recall intake from the BRFSS intake.