Table 3.
Serum cholinesterase (SChE) level of workers with respect to different working sections among males, females and the total number of flower farm workers.
| Characteristics | SCHE in MU AM(SD) |
p-Value (t-Test) |
Range | No. of SCHE above 140 MU (%) (95% CI) | Prevalence ratio 95% CI | |
|---|---|---|---|---|---|---|
| Female workers (n = 311) | ||||||
| Work section | Greenhouse workers (n =156) | 116.2 (29.3) | 0.42 | 51–189 | 27 (17.4) (12.1–24.1) | 0.9 (0.89–1.09) |
| Packinghouse workers (n = 155) | 118.7 (25.3) | 50–190 | 25 (16.1 (11.1–22.8)) | 1 | ||
| Service year | <5 years (n = 244) | 118.1 (27.8) | 0.42 | 50–190 | 42 (17.2) (13.0–22.5) | 1.04 (0.91–1.18) |
| ≥5years (n = 67) | 115.1 (27.5) | 69–189 | 10 (14.9) (8.2–25.7) | 1 | ||
| Transferred from Other work section | Yes (n = 24) | 116.1 (26.0) | 0.65 | 81–174 | 2 (8.3) (2.0–28.6) | 1.11(0.94−1.30) |
| No (n = 287) | 117.8 (27.7) | 50–190 | 50 (17.4) (13.4–22.3) | |||
| Male workers (n = 277) | ||||||
| Work section (n = 277) | Sprayers (n = 148) | 116.1 (25.9) | 0.85 | 77–190 | 23 (15.5) (10.5–22.4) | 1.03 (0.29–1.14) |
| Non-sprayers (n = 129) | 115.5 (24.2) | 64–164 | 23 (17.8) (12.1–25.5) | 1 | ||
| Working years | <5 years (n = 218) | 115.3 (25.0) | 0.49 | 70–190 | 36 (16.5) (12.1–22.1) | 1.04 (0.89–1.21) |
| ≥5 years (n = 59) | 117.8 (25.4) | 64–189 | 10 (16.9) (9.3–28.9) | |||
| Transferred from other work section | Yes (n = 38) | 117.2 (22.8) | 0.15 | 70–164 | 7 (18.3) (8.9–34.2) | 0.99 (0.84–1.16) |
| No (n = 239) | 112.1 (25.6) | 64–190 | 39 (16.3) (12.1–21.6) | |||
| Own farm | Yes (n = 87) | 118.6 (25.5) | 0.21 | 76–183 | 13 (14.9) (8.8–24.2) | 1.04 (0.92−1.17) |
| No (n = 190) | 114.6 (24.8 | 64–190 | 33 (17.4) (13.6–23.5) | |||
| Total workers (n = 588) | ||||||
| Work section | Sprayers (n = 148) | 116.1 (25.9) | 0.75 | 77–190 | 23 (15.3) (10.5–22.3) | 1.03 (0.95–1.12) |
| Non-sprayers (n = 440) | 116.9 (26.4) | 50–190 | 75 (17.05) (13.8–20.9) | 1 | ||
| Working years | <5 years (n = 462) | 116.8 (26.5) | 0.87 | 50–190 | 78 (16.9) (13.7–20.6) | 1 |
| ≥5 years (n = 126) | 116.4 (25.4) | 64–189 | 20 (15.9) (10.4–23.4) | 1.01 (0.92–1.10) | ||
| Transferred from other work section | Yes (n = 62) | 117.9 (22.9) | 0.70 | 70–174 | 9 (14.5 (7.7–25.7)) | 1.03 (0.92–1.15 |
| No (n = 526) | 116.626.7) | 50–190 | 89 (16.9 (13.9–20.4)) | 1 | ||
AM = arithmetic mean, SD = standard deviation, SChE = serum cholinesterase level, MU= Michel units, CI = confidence interval.