Table 3.
Characteristics of patients with TB in China in relation to vitamin D deficiency and severe deficiency (<20 ng/mL)
| Characteristics | Total n=306 |
No (%) with vitamin D deficiency | Univariate OR (95% CI) | Multivariate adjusted OR (95% CI) |
p Value |
| Female | 91 | 65 (71.4) | Reference | ||
| Male | 215 | 162 (75.3) | 1.22 (0.71 to 2.12) | ||
| Age | |||||
| <40 | 65 | 41 (63.1) | Reference | Reference | |
| 40–59 | 138 | 103 (74.6) | 1.72 (0.92 to 3.24) | 1.30 (0.67 to 2.54) | 0.438 |
| ≥60 | 103 | 83 (80.6) | 2.43 (1.21 to 4.90) | 1.58 (0.75 to 3.34) | 0.230 |
| Residence | |||||
| Urban | 103 | 75 (72.8) | Reference | ||
| Rural | 203 | 152 (74.9) | 1.11 (0.65 to 1.91) | ||
| Type/sputum smear | |||||
| Positive | 96 | 66 (68.8) | Reference | ||
| Negative | 187 | 144 (77.0) | 1.52 (0.88 to 2.64) | ||
| EPTB | 23 | 17 (73.9) | 1.29 (0.46 to 3.59) | ||
| Category of TB | |||||
| New | 241 | 175 (72.6) | Reference | ||
| Retreatment | 65 | 52 (80.0) | 1.51 (0.77 to 2.95) | ||
| Smoking cigarette/day | |||||
| 0 | 135 | 92 (68.1) | Reference | ||
| 1–9 | 58 | 46 (79.3) | 1.79 (0.86 to 3.72) | ||
| 10–19 | 79 | 60 (75.9) | 1.48 (0.79 to 2.77) | ||
| ≥20 | 34 | 29 (85.3) | 2.71 (0.98 to 7.49) | ||
| Month of TB registration | |||||
| May–October | 117 | 74 (63.2) | Reference | Reference | |
| November–April | 189 | 153 (81.0) | 2.47 (1.46 to 4.17) | 2.15 (1.25 to 3.69) | 0.006 |
| FBG level | |||||
| Normal | 95 | 58 (61.1) | Reference | Reference | |
| Pre-DM | 83 | 62 (74.7) | 1.88 (0.99 to 3.59) | 1.77 (0.91 to 3.43) | 0.090 |
| DM | 128 | 107 (83.6) | 3.25 (1.74 to 6.06) | 2.68 (1.40 to 5.15) | 0.003 |
p Value is shown for the multivariate adjusted OR.
May–October=the warm months of the year; November–April=the cold months of the year.
Hosmer-Lemeshow good of fit: =7.910, p=0.341, indicating the good of fit of logistic regression models is good.
DM, diabetes mellitus; EPTB, extrapulmonary tuberculosis; FBG, fasting blood glucose; Pre-DM, prediabetes diabetes mellitus; TB, tuberculosis.