Table 1 Study participant demographics at baseline and after 6-months of dietary intervention
Baseline characteristics (N = 497)pCharacteristics at 6-month follow-up (N = 387)p
Intervention intensityMinimalEnhancedMinimalEnhanced
Total participants238 (48%)259 (52%)176 (46%)210 (54%)
Phenotype
Bitter non-taster45 (19%)48 (19%)0.20331 (18%)42 (20%)0.987
Intermediate taster21 (9%)36 (14%)14 (8%)29 (14%)
Bitter taster172 (72%)175 (68%)131 (74%)139 (66%)
*Sex
M78 (33%)62 (24%)0.02962 (35%)45 (21%)0.883
F160 (67%)197 (76%)114 (65%)165 (79%)
**Race (ancestry)
White (CAU)110 (46%)90 (35%)0.00981 (46%)71 (34%)0.795
Black (AA)128 (54%)169 (65%)95 (54%)139 (66%)
Age (y)
18-293 (1%)4 (2%)0.0781 (1%)3 (1%)0.258
30-4431 (13%)33 (13%)12 (7%)23 (11%)
45-65134 (56%)171 (66%)103 (59%)137 (65%)
> 6570 (29%)51 (20%)60 (34%)47 (22%)
***Education
Grade 12 or less171 (72%)148 (57%)0.003121 (69%)113 (54%)0.628
1- 2 y post high school35 (15%)46 (18%)27 (15%)36 (17%)
3- 4 y post high school20 (8%)46 (18%)19 (11%)42 (20%)
≥ 5 y post high school12 (5%)19 (7%)9 (5%)19 (9%)
Total household income
$14,99970 (29%)79 (31%)0.40949 (28%)59 (28%)0.900
$15,000 – 29,00053 (22%)62 (24%)41 (23%)54 (26%)
$30,000 – 49,00033 (14%)30 (12%)22 (13%)24 (11%)
$50,00041 (17%)63 (24%)26 (15%)56 (27%)
Did not report41 (17%)25 (10%)38 (22%)17 (8%)
**Smoking status
Never180 (76%)220 (85%)0.009144 (82%)179 (85%)0.221
Some days or everyday58 (24%)39 (15%)32 (18%)31 (15%)
  • Data presented as the frequency in each category for the indicated time point and intervention: *, **, and *** correspond to P < 0.05, < 0.01, or < 0.001 via a chi-squared comparing intervention intensity at baseline (†). The p value of a chi-squared test comparing baseline to 6-month follow-up is also indicated (‡).