Table 2.
Crude and adjusted odds ratios (95% confidence interval) of BPPV for dementia and in subgroup analysis according to age, sex, income, and region of residence.
| Characteristics | No. of BPPV/ | No. of BPPV/ | ORs for Dementia | p for Interaction | |||
|---|---|---|---|---|---|---|---|
| No. of Dementia (%) | No. of Control (%) | Crude† | p-Value | Adjusted †,‡ | p-Value | ||
| Total participants (n = 57,160) | |||||||
| BPPV | 609/11,432 (5.3) | 1914/45,728 (4.2) | 1.29 (1.18–1.42) | <0.001 * | 1.14 (1.03–1.26) | 0.009 * | |
| Age < 75 years old (n = 20,970) | 0.245 | ||||||
| BPPV | 216/4194 (5.2) | 624/16,776 (3.7) | 1.41 (1.20–1.65) | <0.001 * | 1.18 (0.99–1.39) | 0.062 | |
| Age ≥ 75 years old (n = 36,190) | |||||||
| BPPV | 393/7238 (5.4) | 1290/28,952 (4.5) | 1.23 (1.10–1.39) | <0.001 * | 1.12 (0.99–1.26) | 0.066 | |
| Men (n = 18,295) | 0.063 | ||||||
| BPPV | 158/3659 (4.3) | 428/14,636 (2.9) | 1.50 (1.25–1.81) | <0.001 * | 1.32 (1.09–1.61) | 0.005 * | |
| Women (n = 38,865) | |||||||
| BPPV | 451/7773 (5.8) | 1486/31,092 (4.8) | 1.23 (1.10–1.37) | <0.001 * | 1.09 (0.97–1.22) | 0.148 | |
| Low income (n = 26,330) | 0.651 | ||||||
| BPPV | 262/5266 (5.0) | 795/21,064 (3.8) | 1.34 (1.16–1.55) | <0.001 * | 1.19 (1.02–1.38) | 0.026 * | |
| High income (n = 30,830) | |||||||
| BPPV | 347/6166 (5.6) | 1119/24,664 (4.5) | 1.26 (1.11–1.42) | <0.001 * | 1.10 (0.97–1.26) | 0.134 | |
| Urban (n = 23,085) | 0.920 | ||||||
| BPPV | 242/4617 (5.2) | 762/18,468 (4.1) | 1.29 (1.11–1.50) | 0.001 * | 1.14 (0.98–1.33) | 0.096 | |
| Rural (n = 34,075) | |||||||
| BPPV | 367/6815 (5.4) | 1152/27,260 (4.2) | 1.29 (1.15–1.46) | <0.001 * | 1.14 (1.00–1.29) | 0.046 * | |
* Odd ratios on unconditional logistic regression model, Significance at p < 0.05. † Age, sex, income, region of residence, hypertension, diabetes mellitus, and dyslipidemia were stratified in a conditional logistic regression model. ‡ Adjusted model was adjusted for ischemic heart disease, cerebral stroke, Meniere’s disease, and head trauma.