Table 3.
Mean percentage of energy from fat from two 24 h dietary recalls and the NCI fat screener, 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 | NCI fat screener | Difference† | ||||||
|---|---|---|---|---|---|---|---|---|
| Group | n | Mean | sd | Mean | sd | Mean | sd | Deattenuated correlation coefficient, r |
| All | 260 | 35·50 | 8·29 | 33·04 | 4·27 | −2·46 | 7·82 | 0·38*** |
| Weight category | ||||||||
| Overweight | 30 | 33·68 | 9·57 | 34·21 | 3·66 | 0·54 | 7·83 | 0·65*** |
| Class I and II obese | 127 | 35·70 | 8·08 | 32·71 | 4·15 | −2·99 | 7·90 | 0·31*** |
| Class III obese | 103 | 35·79 | 8·16 | 33·12 | 4·55 | −2·67 | 7·60 | 0·43*** |
| Education | ||||||||
| Less than high-school diploma or GED | 56 | 36·55 | 7·78 | 33·24 | 4·52 | −3·30 | 7·01 | 0·47*** |
| High school or GED | 96 | 35·20 | 9·03 | 32·60 | 4·48 | −2·60 | 8·18 | 0·45*** |
| Some college/technical school | 76 | 35·32 | 8·29 | 33·37 | 3·95 | −1·95 | 8·28 | 0·25* |
| College graduate | 31 | 35·05 | 7·01 | 33·30 | 4·02 | −1·75 | 7·22 | 0·24 |
| Age (years) | ||||||||
| 35–45 | 80 | 35·21 | 8·68 | 33·37 | 4·52 | −1·84 | 7·56 | 0·52*** |
| 45–55 | 101 | 35·97 | 8·84 | 33·12 | 4·43 | −2·84 | 8·76 | 0·28** |
| 55–65 | 79 | 35·20 | 7·15 | 32·61 | 3·79 | −2·59 | 6·81 | 0·36** |
| Employment status | ||||||||
| Not employed | 143 | 35·36 | 8·37 | 32·79 | 4·68 | −2·58 | 8·10 | 0·44*** |
| Employed | 117 | 35·67 | 8·22 | 33·36 | 3·70 | −2·31 | 7·50 | 0·34*** |
NCI fat screener, National Cancer Institute’s Percentage Energy from Fat Screener; GED, General Educational Development.
*P<0·05, **P<0·01, ***P<0·001.
†
Difference was calculated by subtracting the 24 h recall percentage from the NCI percentage.