Table 2 HR (95% CI) of Parkinson disease according to social isolation
From: Social isolation and the risk of Parkinson disease in the UK biobank study
 | Social isolation | |||
---|---|---|---|---|
Least isolated | Moderately isolated | Most isolated | P-trend | |
Cases/person-years | 938/1,083,152 | 788/925,829 | 322/308,040 | Â |
 HR (95% CI)a | 1.00 | 1.01 (0.92–1.11) | 1.23 (1.08–1.40) | 0.01 |
 HR (95% CI)b | 1.00 | 1.00 (0.91–1.10) | 1.19 (1.05–1.36) | 0.04 |