Many Californians who obtained health insurance last year said they struggled to pay their premiums, although having coverage made them more confident about affording future medical care, according to a survey released Thursday. Nearly half of newly insured adults in the state said it was difficult to afford the monthly charge and more than a third delayed or went without care, according to the survey conducted by the Kaiser Family Foundation. (Kaiser Health News is an editorially independent program of the foundation.) The data highlight that health care costs continue to be a worry for many low-income Californians, even with more affordable insurance options available through Obamacare. “Most of them are still in somewhat precarious financial positions,” said Rachel Garfield, senior researcher at the