A leading healthcare analysis group said Thursday that insurance premiums in some states might see double digit increases this year under ObamaCare, but not because of age discrepancies. "Despite initial concerns about the age mix of exchange enrollees, the current age distribution appears to be close enough to plan projections to avoid driving major premium increases," said Avalere Health in a new analysis. However, the group said increasing cost of medical care, use of services and new technology will mean exchange plans will need to increase their premiums, and the hikes will vary state by state.