Table 1.
General characteristics of the study population
| Characteristics | SD (N=5,015) | SHL (N=369,750) | AMD (N=97,663) |
|---|---|---|---|
| Age, median (IQR) yrs | 41 (23 – 53) | 54 (44 – 60) | 60 (56 – 62) |
| Sex, no. (%) | |||
| Male | 2,257 (45.00) | 196,011 (53.01) | 40,186 (41.15) |
| Female | 2,758 (55.00) | 173,739 (46.99) | 57,477 (58.85) |
| Type of benefit plan, no. (%) | n= 4,600 | n=334,156 | n=87,576 |
| PPO | 98 (2.13) | 8,891 (2.66) | 3,574 (4.08) |
| Comprehensive | 157 (3.41) | 9,026 (2.70) | 2,228 (2.54) |
| EPO | 538 (11.70) | 42,979 (12.86) | 7,918 (9.04) |
| HMO | 336 (7.30) | 25,916 (7.76) | 7,211 (8.23) |
| POS | 3,036 (66.00) | 215,970 (64.63) | 59,372 (67.79) |
| POS with capitation | 28 (0.61) | 2,084 (0.62) | 605 (0.69) |
| CDHP | 209 (4.54) | 16,947 (5.07) | 3,965 (4.53) |
| HDHP | 198 (4.30) | 12,343 (3.69) | 2,703 (3.09) |
SD: stargardt disease, SHL: bilateral sensorineural hearing loss, AMD: non-exudative age related macular degeneration, IQR: interquartile range, PPO: preferred provider organization, EPO: exclusive provider organization, HMO: health maintenance organization, POS: point-of-service, CDHP: consumer directed health plan, HDHP: high deductible health plan