Impact of gender on first eye cataract surgery and motor vehicle crash risk for older drivers

摘要

Background: No study to date has examined gender differences in crash risk after cataract surgery. Therefore, this study aimed to determine gender-related differences in the effectiveness of first eye cataract surgery in reducing crash risk for older drivers. Design: This retrospective before and after study used whole population linked data to compare the frequency of police reported crashes 1year before and 1year after first eye cataract surgery for the years 1997-2006. Participants: All patients aged 60-85years who had first eye cataract surgery between 1997 and 2006 in Western Australia and were involved in a motor vehicle crash 12months before and/or after surgery. Methods: Two separate generalized estimating equation Poisson models were undertaken for males and females to compare crash frequency before and after surgery. Main Outcome Measures: Police-reported crashes before and after cataract surgery. Results: A large proportion of the cohort involved in a crash either 1year before or 1year after first eye cataract surgery were male (n=1091, 63.6%) compared with female (n=624, 36.3%). Results from the generalized estimating equation Poisson models showed a significant reduction of 15.3% (P=0.040) in all police reported crash frequency for males 1year after cataract surgery. However, there was no significant change in crash frequency after surgery for females. Conclusions: The results of this study suggest that clinicians may need to take gender into account when advising patients on driving safety before and after cataract surgery.