| Study author | Study design | Number of subjects | Mean age | How disease confirmed | Disease severity, with measurement tool | Length of illness
(mean) | Diagnosed symptoms | Diagnostic method | Includes LTC population? | Diagnosed occurrence | Miscellaneous results |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Coates and Bakheit, 1997 | CS | 48 | 69.9 | NR | 1.4 mean UPDRS | 6.7 yrs | Dysphagia | Chicago Assessment Scale (BSE) | NR | NR | 81.1% scored <5 on at least 1 item on Chicago Assessment Scale. Mostly mild impairment. Significant correlation btwn severity of disease and severity of dysphagia |
| Fuh, Lee, Wang et al., 1997 | Random case series | 19 | 68.4 | At least 2 of 3 cardinal symptoms + levodopa response | 1.9 mean Hoehn and Yahr | 3.2 yrs | Swallowing problems | MBS with and without L-dopa | NR | NR | Without L-dopa: Abnormal MBS: 63.2% (12/19) Aspiration: 15.8% (3/19) With L-dopa: Abnormal MBS: 31.6% (6/19) Aspiration: 5.3% (1/19) |
| Edwards, Quigley, Harned et al., 1994 | Case-control | 20 (13, 7) | 66.6, 67.0 | NR | 22.2 mean UPDRS | 5.3 yrs | Dysphagia | GI survey; videoesophagram | NR | PD pts: 76.9% (10/13) Controls: 14.3% (1/7) | On video: Oral dysphagia 4 Pharyngeal dysphagia: 1 Esophageal dysphagia 8 No sign. Diffs from controls |
| Hartelius and Svensson, 1994 | Survey, self-report | 258 | NR | Not done | NR | NR | Swallowing problems | 25 questions, forced-choice | NR | NR | Swallowing problems often: 18% Swallowing liquids often a problem: 15% Choking often a problem: 21% |
| Wintzen, Badrising, Roos et al., 1994 | PCS | 22 | 62.7 | NR | 1.5-4 Hoehn and Yahr; 1.4 mean UPDRS | 6.7 yrs | Dysphagia | Swallowing Function Questionnaire; VFSS | NR | Questionnaire: 72.7% (16/22) VFSS: 81.1% (18/22) | No correlation between severity of disease and number of dysphagia symptoms |
| Singer, Weiner, and Sanchez-Ramos, 1992 | Interview | 48 | 65.9 | NR | 1-3 Hoehn and Yahr | 7.8 yrs | Dysphagia | Questionnaire | NR | 22.9% (11/48) | Significantly higher incidence of dysphagia in PDs than in control group (6.3%), p<0.05 |
| Bushmann, Dobmeyer, Leeker et al., 1989 | CS | 20 | 65.7 | NR | NR | NR | Dysphagia | Questionnaire; MBS without L-dopa; MBS with L-dopa | NR | Subjective: 35% (7/20) MBS w/o L-dopa: Dysphagia: 75% (15/20) Aspiration: 15% (3/20) | MBS w/ L-dopa: 5/15 dysphagics demonstrated mild to marked improvement |
From: Evidence Tables
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