Table 4.
Multiple logistic regression analysis of variables associated with S. japonica among the respondents
| Risk factors | Positive rate (%) determined by PCR (No. positives/No. examined) | OR (95% CI) | P-value |
|---|---|---|---|
| Age group (years) | |||
| < 30 | 38.10 (8/21) | 1 | |
| 30–39 | 27.78 (15/54) | 0.318 (0.075–1.354) | 0.1212 |
| 40–49 | 15.35 (35/228) | 0.163 (0.041–0.644) | 0.0096* |
| 50–59 | 10.33 (19/203) | 0.058 (0.014–0.239) | < 0.0001* |
| ≥ 60 | 5.26 (6/114) | 0.012 (0.002–0.065) | < 0.0001* |
| Years of doing current job | |||
| < 10 | 7.61 (7/92) | 1 | |
| 10–29 | 12.86 (49/381) | 4.162 (1.461–11.856) | 0.0076* |
| ≥ 30 | 21.09 (27/128) | 18.684 (5.430–64.295) | < 0.0001* |
| Treatment times | |||
| 0 | 32.00 (8/25) | 1 | |
| 1–5 | 17.13 (37/216) | 0.265 (0.064–1.095) | 0.0666 |
| 6–9 | 12.26 (26/212) | 0.156 (0.035–0.689) | 0.0142* |
| ≥ 10 | 8.11 (12/148) | 0.100 (0.021–0.476) | 0.0038* |
| Treatment in 2015–2017 | |||
| No | 18.18 (40/220) | 1 | |
| Yes | 11.29 (43/381) | 0.479 (0.246–0.930) | 0.0298* |
*Significant association (P < 0.05)
Abbreviations: OR, odds ratio; CI, confidence interval