Respondent characteristics in the 2013 survey subgroups
| Variables | Before MDSQ 1999 paper results publication (July 2002) (n=194) | Between 2002 and 2009 (n=448) | After RCOphth publication (February 2009) (n=476) | Statistic, p value: effect size |
|---|---|---|---|---|
| Gender | ||||
| Male | 72 (37.1%) | 135 (30.1%) | 153 (32.1%) | χ2 (2)=3.02, p=0.22 |
| Female | 122 (62.9%) | 313 (69.9%) | 323 (67.9%) | |
| Age at survey completion (years) | ||||
| Mean (SD) | 82.12 (7.26) | 80.56 (7.68) | 79.37 (8.16) | F (2, 1115)=8.86, p<0.001***: ω2=0.01† |
| Median | 83.00 | 82.00 | 80.00 | |
| Registration status | ||||
| Not registered | 87 (44.8%) | 269 (60.0%) | 390 (81.9%) | χ2 (4)=108.67, p<0.001***: Cramer's V=0.22 |
| Registered sight impaired (SI)/ partially sighted | 62 (32.0%) | 117 (26.1%) | 67 (14.1%) | |
| Registered severely sight impaired (SSI)/blind | 45 (23.2%) | 62 (13.8%) | 19 (4.0%) | |
| Number of eyes affected | ||||
| One eye | 19 (9.8%) | 61 (13.6%) | 132 (27.7%) | χ2 (2)=42.76, p<0.001***: Cramer's V=0.20 |
| Both eyes | 175 (90.2%) | 387 (86.4%) | 344 (72.3%) | |
| Wet AMD only v dry AMD only v mixed wet and dry AMD | ||||
| Wet AMD only | 43 (22.2%) | 175 (39.1%) | 195 (41.0%) | χ2 (4)=26.22, p<0.001***: Cramer's V=0.11 |
| Dry AMD only | 108 (55.7%) | 176 (39.3%) | 201 (42.2%) | |
| Wet and dry AMD | 43 (22.2%) | 97 (21.7%) | 80 (16.8%) | |
| HCP who first diagnosed AMD | ||||
| Hospital eye specialist | 131 (67.5%) | 258 (57.6%) | 230 (48.3%) | χ2 (2)=22.07, p<0.001***: Cramer's V=0.14 |
| Optometrist | 63 (32.5%) | 190 (42.4%) | 246 (51.7%) | |
Values are frequencies (valid percentage %) unless otherwise stated.
*p<0.05, **p<0.01, ***p<0.001.
†ω2=0.01 represents a small effect size, 0.06 a medium effect size and 0.14 a large effect size.
AMD, age-related macular degeneration; HCP, healthcare professional; MDSQ, Macular Disease Society Questionnaire; RCOphth, Royal College of Ophthalmologists.