Observed (O) and expected (E) numbers of people in the primary open angle glaucoma cohort who received a subsequent hospital record of Alzheimer's disease (AD) or vascular dementia; observed (Oref) and expected (Eref) numbers of people in the reference cohort* who received a subsequent hospital record of AD or vascular dementia; standardised rate ratios (RR) and 95% 95% CIs
| Outcome | O | E | Oref | Eref | RR (95% CI) |
|---|---|---|---|---|---|
| AD | 1701 | 1686.6 | 28 997 | 29 011.4 | 1.01 (0.96 to 1.06) |
| Vascular dementia | 1844 | 1681.3 | 27 676 | 27 838.7 | 1.10 (1.05 to 1.16) |
*The reference cohort consisted of people admitted with the following conditions coded under ICD-10 for diagnoses and Office of Population Censuses and Surveys Classification of Interventions and Procedures version 4 (OPCS-4) for operations: otitis externa/media (ICD-10 H60-H67), varicose veins (I83), haemorrhoids (I84), upper respiratory tract infections (J00-J06), deflected septum, nasal polyp (J33+J34.2), impacted tooth and other disorders of teeth (K00-K03), inguinal hernia (K40), gall bladder disease (K80-K81), ingrowing toenail and other diseases of nail (L60), sebaceous cyst (L72.1), bunion (M20.1), appendectomy (OPCS-4 H01-H03), dilation and curettage (Q10.3-Q10.4), total hip replacement (W37-W39), total knee replacement (W40-W42).