Table 2.

Variables associated with test completion and distance ≥200 m.

	Odds of test completion Complete: N = 1,697 Incomplete/Ineligible: N = 133				Odds of completion and distance ≥ 200 m Complete, distance ≥ 200 m: N = 1,530 Incomplete/Ineligible/Distance < 200 m: N = 300
	Simple adjusted1		Fully adjusted2		Simple adjusted1		Fully adjusted2
Characteristic (N = 1830)	aOR	95% CI	aOR	95% CI	aOR	95% CI	aOR	95% CI
DPP treatment assignment (Ref: Placebo)
Lifestyle	1.40	0.89, 2.21	1.49	0.87, 2.59	1.18	0.86, 1.63	1.09	0.76, 1.56
Metformin	1.05	0.69, 1.59	0.86	0.53, 1.39	1.07	0.79, 1.45	0.94	0.66, 1.32
Baseline age group (Ref: 25–44 years)
45–59 years	0.72	0.44, 1.14	0.72	0.41, 1.24	0.61	0.44, 0.85	0.61	0.41, 0.89
60+ years	0.34	0.20, 0.59	0.30	0.14, 0.64	0.25	0.17, 0.38	0.28	0.17, 0.47
Sex (Male v. Female)	0.88	0.60, 1.30	1.01	0.50, 2.05	1.05	0.79, 1.40	0.58	0.35, 0.94
Ethnicity (Ref: Non-Hispanic White)
Non-Hispanic Black	0.69	0.44, 1.08	0.58	0.34, 1.00	0.63	0.46, 0.88	0.58	0.40, 0.85
Hispanic	1.04	0.63, 1.78	0.89	0.48, 1.71	0.61	0.43, 0.87	0.66	0.43, 1.00
American Indian	1.37	0.61, 3.67	1.44	0.53, 5.10	1.99	1.02, 4.37	2.49	1.15, 6.25
Asian	1.17	0.49, 3.44	0.49	0.19, 1.54	0.82	0.45, 1.57	0.71	0.36, 1.52
Education (Less than College vs. College)	0.53	0.36, 0.78	0.55	0.35, 0.86	0.56	0.42, 0.75	0.58	0.43, 0.80
Smoking (ref: Never)3
Past	0.78	0.53, 1.15	0.67	0.43, 1.04	0.83	0.64, 1.10	0.75	0.55, 1.02
Current	0.40	0.18, 1.01	0.51	0.20, 1.63	0.60	0.31, 1.28	0.91	0.41, 2.28
BMI categories (ref: <30 kg/m2)3
30–35 kg/m2	0.59	0.36, 0.97	0.56	0.30, 1.05	0.70	0.50, 0.98	0.86	0.57, 1.32
35–40 kg/m2	0.45	0.26, 0.77	0.60	0.26, 1.37	0.53	0.36, 0.77	0.82	0.48, 1.42
40+ kg/m2	0.21	0.12, 0.37	0.31	0.11, 0.84	0.29	0.19, 0.45	0.55	0.27, 1.12
Height (per 10 cm)3	0.97	0.73, 1.27	0.85	0.60, 1.19	1.29	1.06, 1.58	1.23	0.97, 1.55
Waist (per 15 cm)4	0.56	0.45, 0.68	0.79	0.55, 1.14	0.64	0.55, 0.74	0.80	0.62, 1.03
Grip strength (per 10 kg-force) 3	1.17	0.95, 1.48	1.16	0.91, 1.50	1.51	1.27, 1.80	1.45	1.20, 1.76
Median Physical Activity (per 5 MET-h/Wk)5	1.11	1.03, 1.22	1.03	0.94, 1.13	1.13	1.06, 1.20	1.09	1.02, 1.17
Neuropathy Signs/Symptoms (Present vs. Absent)3	0.50	0.33, 0.74	0.59	0.37, 0.92	0.42	0.31, 0.55	0.45	0.33, 0.61
Composite Health Issue (Present vs. Absent)6	0.41	0.28, 0.59	0.46	0.30, 0.70	0.56	0.43, 0.73	0.64	0.48, 0.87
Glycemic exposure (per 1% mean A1c)7	0.81	0.64, 1.04	0.98	0.74, 1.33	0.76	0.64, 0.91	0.91	0.74, 1.12

Bold font indicates a statistically significant association.

^{1Odds ratio adjusted for age group, sex, ethnicity, and education.}

^{2Odds ratios adjusted for all other variables in the table; adjusted for treatment group, sex, and ethnicity.}

³Collected at visit concurrent to 6MWT (year 15 visit).

⁴Collected 1 year prior to 6MWT (year 14 visit).

^{5Median of self-reported physical activity measures from DPP baseline through DPPOS Year 12.}

⁶Includes recent hospitalization (past 12 months), history of hip replacement, history of stroke, CHF or MI, and recent falls (past 12 months).

^{7Mean HbA1c of all available measures DPP baseline through DPPOS Year 15.}