Table 3.

Agreement between chart review and HMO immunization registry on ever refusal status

Agreement % (95% CI)	HMO A
	Two years old and under n = 525	Six years old n = 215
Sensitivity	58.5% (47.1%, 69.2%)	52.5% (36.3%, 68.2%)
Specificity	89.8% (86.6%, 92.4%)	92.6% (87.4%, 95.8%)
Positive predictive value	51.6% (41.1%, 62.0%)	61.8%#(43.6%, 77.3%)
Negative Predict value	92.1% (89.1%, 94.4%)	89.5% (83.9%, 93.4%)
Kappa	45.9% (35.8%, 56.0%)	47.8% (32.4%, 63.3%)
	HMO B
	Two years old and under n = 315	Six years old n = 194
Sensitivity	79.8% (71.7%, 86.2%)	89.7%#(74.8%, 96.7%)
Specificity	80.1% (73.5%, 85.5%)	84.5% (77.6%, 89.6%)
Positive predictive value	73.6% (65.3%, 80.5%)	59.3%#(45.8%, 71.7%)
Negative Predict value	85.1% (78.8%, 89.9%)	97.0%#(92.1%, 99.1%)
Kappa	59.2% (50.2%, 68.2%)	62.3% (50.0%, 74.6%)

^# P-value < .05