Table 1.
Summary of Demographic Characteristics of Subjects for All Randomized Participants (N=346).
| Total | Whites | African-Americans | P-value# for Race | |
|---|---|---|---|---|
| Number of Subjects | ||||
| Intention-to-Treat Analysis | N=346 | N=243 | N=103 | |
| Completers | N=250 | N=181 | N=69 | |
| Lost to Follow-Up | N=96 | N=62 | N=34 | |
| Gender(Females) | ||||
| Intention-to-Treat Analysis | N=285 | N=194 | N=91 | 0.0574 |
| Completers | N=197 | N=138 | N=59 | 0.1092 |
| Lost to Follow-Up | N=88 | N=56 | N=32 | 0.5199 |
| Age(years) | ||||
| Intention-to-Treat Analysis | 42.38+/−8.98 | 43.21+/−9.00 | 40.40+/−8.66 | 0.0075 |
| Completers | 43.01+/−8.90 | 43.68+/−9.04 | 41.25+/−8.32 | 0.0532 |
| Lost to Follow-Up | 40.73+/−9.02 | 41.85+/−8.80 | 38.68+/−9.18 | 0.0989 |
| Body Mass Index(kg/m2) | ||||
| Intention-to-Treat Analysis | 32.96+/−3.65 | 32.83+/−3.68 | 33.25+/−3.58 | 0.3277 |
| Completers | 32.72+/−3.56 | 32.51+/−3.61 | 33.26+/−3.41 | 0.1338 |
| Lost to Follow-Up | 33.59+/−3.82 | 33.78+/−3.76 | 33.23+/−3.97 | 0.5044 |
| Education Level+ | ||||
| Grade School(6 years or less) | - | - | - | 0.8198 |
| High School(10–12 years) | N=24(N=15) | N=19(N=12) | N=5(N=3) | |
| Vocational Training(beyond High School) | N=17(N=11) | N=13(N=10) | N=4(N=1) | |
| Some College(less than 4 years) | N=97(N=70) | N=64(N=47) | N=33(N=23) | |
| College/University Degree | N=119(N=89) | N=83(N=64) | N=36(N=25) | |
| Graduate or Professional Education | N=87(N=64) | N=64(N=48) | N=23(N=16) |
+
Indicates that numbers not in parenthesis are based on the intent-to-treat analysis and numbers in parenthesis are based on subjects completing 18 months.
#
Categorical variables are tested with chi-square, continuous variables are tested with Students T-test