Private health insurance plans in 1977: coverage, enrollment, and financial experience.

The private health insurance industry collected $47.1 billion in premiums in 1977 and returned $41.6 billion in benefits to their subscribers. Premiums rose 16.3 percent as a direct consequence of rapid claims growth in 1976. After operating expenses were deducted, the industry showed a small, $.4 billion underwriting loss. About 78 percent of the population were insured for hospital care, and about 76 percent for surgical services. Smaller percentages had coverage for other types of care. An estimated 61.8 percent of the aged bought private hospital insurance, and 47.1 percent bought surgical insurance, mostly to supplement Medicare benefits. About 12 percent of persons under age 65 had no protection against the cost of hospital care either through private insurance or a public program such as Medicare or Medicaid.