Table 3.
Odds of Head Tremor as a Function of Tremor Duration or Age: Quartiles Analysis
| Odds of head tremor as a function of tremor duration 1 | |
|---|---|
|
| |
| Age quartile | |
| Quartile 1 (≤62 years) | OR = 1.01 (95% CI = 0.98 – 1.05), p = 0.45 |
| Quartile 2 (63 - 70 years) | OR = 0.99 (95% CI = 0.97 – 1.02), p = 0.52 |
| Quartile 3 (71 – 77 years) | OR = 1.02 (95% CI = 0.998 – 1.04), p = 0.07 |
| Quartile 4 (≥78 years) | OR = 1.01 (95% CI = 0.99 – 1.03), p = 0.20 |
|
| |
| Odds of head tremor as a function of age 2 | |
|
| |
| Tremor duration quartile | |
| Quartile 1 (≤7 years) | OR = 1.01 (95% CI = 0.98 – 1.04), p = 0.63 |
| Quartile 2 (8 - 17 years) | OR = 1.04 (95% CI = 1.01 – 1.08), p = 0.01 |
| Quartile 3 (18 – 33 years) | OR = 1.04 (95% CI = 1.01 – 1.07), p = 0.008 |
| Quartile 4 (≥34 years) | OR = 1.07 (95% CI = 1.02 – 1.12), p = 0.01 |
1
Each OR represents the result of a single bivariate logistic regression analysis in one age quartile. Dependent variable = head tremor and independent variable = tremor duration in years.
2
Each OR represents the result of a single bivariate logistic regression analysis in one tremor duration quartile. Dependent variable = head tremor and independent variable = age in years.