Table 3.
Prevalences and incidences of categorical outcome measures and group differences
| Total Sample | Dance & Screen Time Reduction | Health Education | T vs. C Relative Risk (95% CI)** | Number Needed to Treat (NNT)*** | ||||
|---|---|---|---|---|---|---|---|---|
| Baseline Prevalence | Follow-up Incidence* | Baseline Prevalence | Follow-up Incidence* | Baseline Prevalence | Follow-up Incidence* | |||
| BMI ≥ 95th percentile | 86 (33.0) | 14 (8.8%) | 44 (32.8) | 6 (7.2%) | 42 (33.1%) | 8 (10.5%) | 0.69 (0.25, 1.89) | 30 |
| Systolic BP ≥ 95th percentile | 5 (1.9%) | 1 (0.5%) | 2 (1.5%) | 0 (0%) | 3 (2.4%) | 1 (1.0%) | NA | NA |
| Diastolic BP ≥ 95th percentile | 0 (0%) | 1 (0.4%) | 0 (0%) | 1 (0.8%) | 0 (0%) | 0 (0%) | NA | NA |
| Total Cholesterol ≥ 200 mg/dL | 41 (19.7%) | 7 (5.2%) | 18 (16.8%) | 2 (2.7%) | 23 (22.8%) | 5 (8.1%) | 0.34 (0.07, 1.67) | 19 |
| LDL-Cholesterol ≥ 130 mg/dL | 38 (18.3%) | 7 (5.1%) | 14 (13.1%) | 4 (5.2%) | 24 (23.8%) | 3 (4.9%) | 1.06 (0.25, 4.54) | −361 |
| HDL-Cholesterol < 35 mg/dL | 5 (2.4%) | 11 (6.7%) | 2 (1.9%) | 6 (6.8%) | 3 (3.0%) | 5 (6.5%) | 1.05 (0.33, 3.31) | −308 |
| Triglycerides ≥ 135 mg/dL | 10 (4.8) | 3 (1.9%) | 8 (7.5%) | 1 (1.2%) | 2 (2.0%) | 2 (2.6%) | 0.47 (0.04, 5.08) | 74 |
| Glucose ≥ 126 mg/dL | 0 (0%) | 2 (1.2%) | 0 (0%) | 1 (1.1%) | 0 (0%) | 1 (1.3%) | 0.89 (0.06, 13.98) | 720 |
| Insulin ≥ 30 uIU/ml | 10 (4.8%) | 18 (11.1%) | 6 (5.6%) | 5 (5.9%) | 4 (4.0%) | 13 (16.9%) | 0.35 (0.13, 0.93) | 9 |
*
New clinical abnormalities identified during the follow-up period (not identified at baseline).
**
Ratio of incidence rates in the Treatment and health education Comparison groups and 95% Confidence Interval (CI) during the follow-up period.
***
NNT = Number Needed to Treat, the number of girls one would expect to treat with the Treatment intervention to produce one more success (to prevent one less clinical abnormality) than if the same number of girls were treated with the Comparison intervention.
NA = Not applicable because incidence rates too small.