Table 3 Logistic regression of the appearance of nodules
Variables | Saturated model | Stepwise model | ||
|---|---|---|---|---|
OR(95% CI) | P-value | OR (95% CI) | P-value | |
Appearance of nodule(s) (yes/no) | ||||
Less than 5 nodules: | ||||
150 µg/kg 3-monthly (n = 66) | Ref. | Ref. | ||
150 µg/kg annually (n = 77) | 1.6 (0.6–3.8) | 0.32 | 1.6 (0.7–3.8) | 0.28 |
800 µg/kg 3-monthly (n = 54) | 2.6 (0.8–7.7) | 0.092 | 2.6 (0.9–7.9) | 0.082 |
800 µg/kg annually (n = 58) | 0.9 (0.4–2.1) | 0.777 | 0.9 (0.4–2.2) | 0.871 |
More than 5 nodules | ||||
150 µg/kg 3-monthly (n = 59) | 0.8 (0.3–1.9) | 0.619 | 0.9 (0.4–2.0) | 0.736 |
150 µg/kg annually (n = 49) | 3.5 (0.9–13.3) | 0.066 | 4.1 (1.1–15.3) | 0.034 |
800 µg/kg 3-monthly (n = 58) | 1.2 (0.4–2.9) | 0.759 | 1.3 (0.5–3.2) | 0.577 |
800 µg/kg annually (n = 64) | 5.2 (1.4–19.5) | 0.014 | 5.5 (1.5–20.1) | 0.01 |
Age | 1.0 (1.0–1.0) | 0.872 | ||
Weight | 1.0 (1.0–1.0) | 0.661 | ||
CMFL in the village of residence | ||||
Low | Ref. | |||
Middle | 1.2 (0.5–2.9) | 0.704 | ||
High | 1.3 (0.6–3.0) | 0.537 | ||
MFD | ||||
0–30 mf/mg | Ref. | |||
31–80 mf/mg | 1.3 (0.6–2.6) | 0.459 | ||
81–170 mf/mg | 1.2 (0.6–2.4) | 0.624 | ||
> 171 mf/mg | 1.7 (0.8–3.7) | 0.151 | ||