Table 6.
Frequencies of MN and BNu in farmers and controls according to age, gender, smoking status, BMI and duration of employment. Data are presented as mean ± standard deviation (s.d)
| Controls (n = 30) | Farmers (n = 39) | |||
|---|---|---|---|---|
| Mean ± S.D | Mean ± S.D | |||
| Groups | Frequency of MN (%) | Frequency of BNu (%) | Frequency of MN (%) | Frequency of BNu (%) |
| Age (years) | ||||
| 26–35 | 1.01 ± 0.32 | 2.01 ± 0.73 | 6.65 ± 0.92* | 1.50 ± 1.41 |
| 36–45 | 1.47 ± 0.58 | 1.67 ± 0.94 | 6.22 ± 1.90* | 1.51 ± 0.19 |
| 46–55 | 1.57 ± 0.72 | 1.49 ± 0.86 | 8.01 ± 3.09* | 1.33 ± 0.45 |
| 56–65 | 1.10 ± 0.14 | 1.85 ± 0.64 | 6.61 ± 3.21* | 1.63 ± 0.74 |
| Gender | ||||
| Male | 1.32 ± 0.55 | 1.85 ± 0.86 | 6.75 ± 3.01* | 1.49 ± 0.61 |
| Female | 1.56 ± 0.70 | 1.32 ± 0.70 | 7.23 ± 2.43* | 1.80 ± 0.83 |
| Smoking status | ||||
| Smokers | 1.25 ± 0.41 | 1.99 ± 1.08 | 6.82 ± 2.65* | 1.39 ± 0.62 |
| Non-smokers | 1.45 ± 0.66 | 1.56 ± 0.71 | 6.83 ± 3.15* | 1.65 ± 0.65 |
| BMI | ||||
| Underweight | - | - | 6.89 ± 3.04 | 1.49 ± 0.80 |
| Normal | 1.54 ± 0.61 | 1.59 ± 1.19 | 7.83 ± 3.19* | 1.43 ± 0.77 |
| Pre-obese | 1.22 ± 0.47 | 1.72 ± 0.62 | 6.22 ± 2.58* | 1.58 ± 0.57 |
| Obese grade 1 | 1.66 ± 0.31 | 1.30 ± 0.61 | 6.25 ± 4.74 | 1.85 ± 0.35 |
| Obese grade 2 | 1.57 ± 1.25 | 2.23 ± 0.91 | - | - |
| Duration of employment (years) | ||||
| 1–10 | 1.39 ± 0.50 | 1.74 ± 0.99 | 7.04 ± 2.39* | 1.34 ± 0.61 |
| 11–20 | 1.21 ± 0.64 | 1.74 ± 0.72 | 6.14 ± 3.02* | 1.54 ± 0.42 |
| 21–30 | 1.67 ± 0.83 | 1.56 ± 0.93 | 5.80 ± 2.06* | 1.76 ± 0.48 |
| 31–40 | 1.25 ± 0.53 | 1.63 ± 0.52 | 7.32 ± 4.20* | 1.29 ± 0.88 |
| 41–50 | - | - | 8.82 ± 3.71 | 1.71 ± 1.08 |
| Total | 1.39 ± 0.60 | 1.69 ± 0.84 | 6.83 ± 2.91* | 1.54 ± 0.64 |
*Farmers versus controls (p < 0.05)