Ref no | Author | Publication year | Exam/op year | Follow-up year | Region | Index population (patients undergoing cataract extraction) | Comparison population | Primary result |
16 | Hirsch and Schwartz | 1983 | 1970–9 | 1990 | USA | n = 167 | Other surgical patients n = 824 | MRR = 1.78 |
17 | Benson et al | 1988 | 1979–80 | 31 December 1984 | USA | n = 193 | Other surgical patients West Virginia n = 182 | DRR = 3.33 |
18 | Street and Javitt | 1992 | 1984 | 1990 | USA | All US Medicare beneficiaries age 65–74 n = 214 431 | USA population age 65–74 | Cataract subjects had lower survival |
19 | Ninn-Pedersen and Stenevi | 1995 | 1986–90 | 1991 | Sweden | n = 5120 | Swedish population | No overall asoociation reported |
20 | Knudsen et al | 1999 | 1984–6 | 1995 | Denmark | n = 775 | Danish population 1988–9 | SMR 1.22 |
21 | Meddings et al | 1999 | 1985 and 1989 | 31 December 1994 | Canada | n = 20 214 | Population British Columbia not undergoing cat ext n = 1 643 696 | HR = 3.2 (2.0 to 5.0) males |
HR = 3.3 (1.9 to 5.7) females | ||||||||
22 | McKibbin et al | 2001 | 1989–93 | 1999 | UK | Patients aged 40–64 n = 709 | UK interim life tables for 1991 | HR = 1.72 (1.12 to 2.64) |
10 | Wang et al | 2001 | 1992–4 | 1997–9 | Australia | n = 463 | n = ? | RR = 0.8 (0.6 to 1.1) |
12 | Borger et al | 2003 | 1990 | 2000 | The Netherlands | n = 951 | n = 5090 | HR = 1.2 (0.86 to 1.68) |
13 | McGwin et al | 2003 | 1994–6 | 31 December 2000 | USA | n = 200 | Subjects from ophthalmology clinics n = 98 | MRR = 2.0 (0.8 to 5.9) (multivariate adjusted) |
All analyses are age- and gender-adjusted. 95% CIs are given in parentheses where available.
DRR, death rate ratio; HR, hazard ratio; MRR, mortality rate ratio; OR, odds ratio; RR, relative risk; SMR, standardised mortality ratio.