Table 4.

The association between HbA1c and TB, ages ≥ 21 years*.

Glucose/HbA1c level†¶	TB cases/ total screened (46/4,066)	TB prevalence per 100,000	Unadjusted OR (95 % CI)	Adjusted OR§ (95 % CI)
Normal level (Glu < 140, or HbA1c < 5.7 %)	20/2,756	726	Reference	Reference
Pre-DM (HbA1c 5.7 %–6.4 %)	4/340	1,176	1.62 (0.56, 4.72)	2.26 (0.79, 6.48)
DM, controlled (HbA1c 6.5 %–7.9 %)	5/279	1,792	2.47 (0.93, 6.53)	3.54 (1.21, 10.36) ‡
DM, uncontrolled (HbA1c ≥ 8.0 %)	17/691	2,460	3.39 (1.79, 6.44) ‡	4.03 (1.74, 9.35) ‡

*Includes cross-sectional prevalent TB cases in persons ≥ 21 years of age.

†Persons with prior diabetes were included in the Normal level or Pre-DM level in this table if their glucose/HbA1c levels fell within these ranges at the time of testing.

^¶n = 33 missing glucose/HbA1c results.

‡DM controlled, p = 0.02; DM uncontrolled, p < 0.01.

^§Adjusted for age, sex, BMI, current tobacco use, self-reported history of TB, TB exposure and diabetes medication use.

DM = Diabetes mellitus; Glu = glucose; HbA1c = hemoglobin A1c; CI = confidence interval; OR = odds ratio.