Table 1. Numbers of Insulin Resistance Atherosclerosis Study participants, fraction of cohort and 5-year conversion rates stratified by race/ethnicity and gender, decade of age at baseline, fasting glucose status, or 2-h glucose status.

	Numbers of participants in strata (%) by race/ethnicity				Number in stratum who had converted at 5 years (%)
Stratum	Overall	NHW	Hispanic	African American	Overall	NHW	Hispanic	African American
Whole study	722	302	249	171	127 (17.6%)	54 (17.9%)	44 (17.7%)	29 (17.0%)
Gender
Female	394 (54.6%)	151 (50.0%)	146 (58.6%)	97 (56.7%)	73 (18.5%)	29 (19.2%)	27 (18.5%)	17 (17.5%)
Male	328 (45.4%)	151 (50.0%)	103 (41.4%)	74 (43.3%)	54 (16.5%)	25 (16.6%)	17 (16.5%)	12 (16.2%)
Age at baseline, years
40–49	234 (32.4%)	88 (29.1%)	86 (34.5%)	60 (35.1%)	33 (14.1%)	13 (14.8%)	10 (11.6%)	10 (16.7%)
50–59	253 (35.0%)	105 (34.8%)	92 (36.9%)	56 (32.7%)	43 (17.0%)	17 (16.2%)	18 (19.6%)	8 (14.3%)
60–70	235 (32.5%)	109 (36.1%)	71 (28.5%)	55 (32.2%)	51 (21.7%)	24 (22%)	16 (22.5%)	11 (20.0%)
Fasting glucose
NFG	525 (72.7%)	208 (68.9%)	207 (83.1%)	110 (64.3%)	60 (11.4%)	23 (11.1%)	28 (13.5%)	9 (8.2%)
IFG	197 (27.3%)	94 (31.1%)	42 (16.9%)	61 (35.7%)	67 (34.0%)	31 (33.0%)	16 (38.1%)	20 (32.8%)
2-h glucose
NGT	481 (66.6%)	203 (67.2%)	165 (66.3%)	113 (66.1%)	43 (8.9%)	18 (8.9%)	19 (11.5%)	6 (5.3%)
IGT	241 (33.4%)	99 (32.8%)	84 (33.7%)	58 (33.9%)	84 (34.9%)	36 (36.4%)	25 (29.8%)	23 (39.7%)

NHW, non-Hispanic white; NFG, normal fasting glucose; IFG, impaired fasting glucose; NGT, normal glucose tolerance; IGT, impaired glucose tolerance.