{'fraction_non_alphanumeric': 0.04284559417946645, 'fraction_numerical': 0.0274858528698464, 'mean_word_length': 4.980676328502415, 'pattern_counts': {'":': 0, '<': 1, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Feasibility of recruiting publicly insured children with special health care needs for a population-based clinical study.

OBJECTIVE
Assess the feasibility of recruiting children with special health care needs (CSHCN) into a clinical study using Medicaid data.


METHODS
We used the 3M Clinical Risk Grouping software to identify and classify Medicaid-enrolled CSHCN ages 7-17 years in Washington into one of three chronic condition severity groups: episodic, life-long, or malignancy/catastrophic. We compared contact, recruitment, enrollment, and data completion proportions across severity groups using the Pearson chi-square or Fisher's exact test.


RESULTS
Of the 2,666 CSHSN in the Medicaid files, we contacted 922 and recruited 211 CSHCN (22.8 percent). One-hundred-thirteen made their study visit (53.6 percent) and 98 had complete data (86.7 percent). We contacted and recruited significantly larger proportions of CSHCN with malignancies/catastrophic conditions (P < 0.01). Across severity groups, there were no differences in enrollment (P = 0.27), but a smaller proportion of CSHCN with life-long conditions had complete data (P = 0.03).


CONCLUSION
It is feasible to recruit CSHCN from Medicaid files for clinical studies.