Some Oregon residents could pay up to 38 percent more for health insurance next year, the latest salvo in an ongoing battle between Obamacare's supporters and opponents over premiums.

The state's insurance regulator was one of the first to finalize 2016 premium rates for the individual and small business markets, which Obamacare covers.

For the state's individual market, the final rate decisions range from an average increase of about 8 percent to nearly 38 percent, depending on the insurance company, the regulator said Friday.

The standard premium for a silver plan, the second of three Obamacare plan options, for a 40-year-old Portland resident range from $271 to $389 a month, the regulator said.

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