Slower growth in some states

The aggregate increases mask great variations in state statistics, the officials say, with enrollment doubling in 20 states during the study period and growth moderating in several states, particularly those that had implemented their programs relatively early.

One state, Texas, reported an 18% decrease in CHIP enrollment in the study period.

Substantial rates of increase occurred in all types of CHIPs as many states began to implement CHIP during 1999. Enrollment increases in separate programs were greater than in Medicaid expansion programs, both in the number of children enrolled and in the percentage increase.

Total Medicaid expansion program enrollment increased by 88%, while total separate program enrollment increased by 128% over the year ending December 1999. Just over two-thirds of the growth in total CHIP enrollment was in separate programs over this period.

Kaiser officials say the greatest rate of growth was in the 12 states that had both types of programs operating at the same time. In those states, overall CHIP enrollment went up by 162% in the study year, with separate program enrollment going up by 258%.