Table 2 Demographics and characteristics of the patient records that were, and were not, deemed to have possible or definite idiopathic Parkinson's disease
Deemed to have IPD N = 150 | Deemed not to have IPD N = 167 | p-value | |
|---|---|---|---|
Date of birth, mean | 1929 | 1935 | <0.0001 |
Age at death, mean, n | 75.8, n = 10 | 79.6, n = 16 | 0.30 |
Period of Service, no. (%) | 0.01 | ||
WWII | (50.3) | (30.4) | |
Vietnam | (22.6) | (35.6) | |
Other | (27.0) | (34.0) | |
Percent service connected, mean | 57.3 | 62.7 | <0.0001 |
Gender, no. (%) | 0.09 | ||
Male | (96.9) | (92.7) | |
ICD-9 CM codes, no. (%) | |||
332.0 | (76.1) | (30.4) | <.0001 |
332.1 | (14.4) | (0.6) | 0.006 |
333.0 | (8.8) | (4.7) | 0.12 |
333.90 | (5.0) | (10.5) | 0.06 |
311 (depression) | (35.2) | (37.1) | 0.71 |
Diagnoses | |||
IPD | 113 | - | |
Possible IPD | 37 | - | |
Medication-induced parkinsonism | 17 | - | |
Parkinsonism | 10 | - | |
Non-parkinsonism movement disorder | 93 | - | |
Other neurological disorder | 47 | - | |
Clinical characteristics | |||
Postural instability | 26 (17.3) | 4 (2.4) | <0.0001 |
Bradykinesia | 51 (34.0) | 5 (3.0) | <0.0001 |
Rigidity | 46 (30.7) | 8 (4.8) | <0.0001 |
Resting tremor | 61 (40.7) | 11 (6.6) | <0.0001 |
Gait difficulty | 47 (31.3) | 6 (3.6) | <0.0001 |