Table 1

Table 1
Average monthly insurance premiums by type of insurance plan, 1997.
	Average Family Premiums ($)
	All Plans	Managed Care	Non Managed Care

HMO Penetration
Less than 25 Percent	439	401	453
25 – 35 Percent	417	408	423
35 – 45 Percent	400	400	401
45 Percent or More	394	380	415

Source: 1997 Robert Wood Johnson Foundation Employer Health Insurance Survey.
Lagoe et al. Health Research Policy and Systems 2005 3:4 doi:10.1186/1478-4505-3-4