Table 5.

Payments per covered year for SD vs. AMD

Variables	Coefficient (95% CI)	P-value
Condition
SD*	Reference
AMD	− 17.34 (− 22.47, − 12.22)	<0.001
Age	1.58 (1.42, 1.74)	<0.001
Sex
Male	Reference
Female	3.04 (1.71, 4.37)	<0.001
Year service was rendered
2010	Reference
2011	− 38.51 (− 40.44, − 36.59)	<0.001
2012	− 48.74 (− 50.72, − 46.76)	<0.001
2013	− 47.71 (− 49.73, − 45.70)	<0.001
2014	− 51.59 (− 53.62, − 49.55)	<0.001
Type of benefit plan
PPO	Reference
Comprehensive	− 14.79 (− 18.14, − 11.44)	<0.001
EPO	1.97 (− 2.21, 6.14)	0.356
HMO	− 4.79 (− 7.10, − 2.48)	<0.001
POS	− 0.70 (− 3.11, 1.72)	0.571
POS with capitation	9.84 (1.92, 17.76)	0.015
CDHP	− 8.80 (− 11.97, − 5.62)	<0.001
HDHP	1.97 (− 1.83, 5.78)	0.309

^*SD patients aged ≥50 years, CI: confidence interval, SD: stargardt disease, AMD: non-exudative age related macular degeneration, 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