Table 4. Risk reclassification of 283 Insulin Resistance Atherosclerosis Study participants with impaired fasting glucose and/or the metabolic syndrome by Diabetes Risk Score (DRS) compared with classification by number of metabolic syndrome risk factors present.

Risk group by number of metabolic syndrome risk factors present	Risk group by DRS				No. reclassified [%]
	Low (<4.5)	Moderate (4.5–7.9)	High (≥8.0)	Any DRS
1–2 risk factors
Number of observations	12	39	31	82	70
Fraction of population	4.2%	13.8%	11.0%	29.0%	85.4%
Number converted at 5 years	1	6	15	22
Fraction converted at 5 years	8.3%	15.4%	48.4%	26.8%
3 risk factors
Number of observations	27	59	48	134	75
Fraction of population	9.5%	20.8%	17.0%	47.3%	56.0%
Number converted at 5 years	2	13	19	34
Fraction converted at 5 years	7.4%	22.0%	39.6%	25.4%
4–5 risk factors
Number of observations	5	17	45	67	22
Fraction of population	1.8%	6.0%	15.9%	23.7%	32.8%
Number converted at 5 years	0	3	26	29
Fraction converted at 5 years	0%	19.1%	57.8%	43.3%
Any number of risk factors
Number of observations	44	115	124	283	167
Fraction of population	15.5%	40.6%	43.8%	100%	59.0%
Number converted at 5 years	3	22	60	85
Fraction converted at 5 years	6.8%	19.1%	48.4%	30.0%

A significant net reclassification improvement of 0.24 was observed (p =0.01).