Table 1
Sample Demographics and Caffeine Consumption.
| AGE GROUP (yrs) | SAMPLE SIZE (n) | %N | MEDIAN TFC SCORE (range) | MEDIAN YEARS SINCE SYMPTOM ONSET (range) | MEDIAN CAFFEINE INTAKE (mg/day), (range) | NATIONAL AVERAGE – CAFFEINE INTAKE (mg/day)11 | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Motor | Psych | Coffee | Tea | Soda | Total | Total | ||||
| 25–34 | 3 | 100% | 13 (5–13) | 7.5 (5–10) | 3 (1–5) | 190.4 (164.3–238) | 0 (0) | 0 (0–158.4) | 190.4 (164.3–396.4) | 137.3 |
| 35–49 | 13 | 100% | 7 (0–13) | 6 (0–18) | 5 (2–14) | 142.8 (0–1142.4) | 50.6 (0–188.8) | 70.4 (0–686.4) | 260.8 (62.9–1400.4) | 199.1 |
| 50–64 | 11 | 91% | 12 (7–13) | 3 (1–7) | 4 (0–22) | 95.2 (0–428.4) | 70.8 (47.2–94.4) | 0 (0–528) | 237.2 (0–528) | 225.5 |
| 65+ | 3 | 100% | 8 (7–8) | 5 (5–6) | 5.5 (1–10) | 285.6 (285.6) | 0 (0) | 52.8 (15.3–105.6) | 338.4 (300.9–391.2) | 207.3 |
| All ages | 30 | 97% | 8 (0–13) | 5 (0–18) | 5 (0–22) | 177.3 (0–1142.4) | 59 (0–686.4) | 20.9 (0–686.4) | 273.2 (0–1400.4) | 105.4* |
[i] %N = percentage of age group sample that are caffeine consumers.
National average – Caffeine Intake (mg/day) = the average total caffeine (mg) consumed per person per day in the United States based on a national database of 37,602 individuals who completed the 2010–2011 Kantar Beverages Consumption Panel11.
*Reference average is for age range 2–65+.
Figure 1
Reported Caffeine Effects on HD Symptoms.