Table 1.
Personal characteristics of subjects in exposed groups (car-spray painters and car-mechanics) vs. control group
| Parameters | Car-Spray painters (n = 20) | Car-Mechanics (n = 20) | Control (n = 20) | P-value a | P-value b |
|---|---|---|---|---|---|
| Age (years) | 27.5 (25.3-29)* | 28.10 (25.25-30.8) | 26.85 (22.3-29.7) | 0.51 c | 0.21 c |
| Height (cm) | 171 (165-176) | 170.6 (165-173.7) | 171 (164-176) | 0.77 c | 1.00 c |
| Weight in (Kg) | 61 (56-62.75) | 58.50 (55-62) | 59.50 (55-65) | 0.84 d | 0.67 d |
| BMI (kg/m2) | 18.9 (18.2-20.3) | 19.05 (18.4-20.7) | 19.10 (18.2-20.9) | 0.88 c | 0.92 c |
| Income (× 103) Rs. | 8.5 (6.5-11.5) | 8.50 (8-10) | 14 (12.3-16) | <0.001 e | <0.001 e |
| Expenditure versus Income | |||||
| Low | 7 (35) ** | 2 (10) | 4 (20) | <0.004 e | <0.02 e |
| Equal | 4 (20) | 8 (40) | 14 (70) | ||
| High | 9 (45) | 10 (50) | 2 (10) | ||
| Education Level | |||||
| Under-Primary | 16 (80) ** | 8 (40) | 0 (0) | <0.001 e | <0.001 e |
| Primary | 3 (15) | 7 (35) | 3 (15) | ||
| Secondary | 1 (5) | 4 (20) | 12 (60) | ||
| Higher-secondary | 0 (0) | 1 (5) | 5 (25) | ||
| Home ownership | |||||
| No | 11 (55) | 13 (65) | 5 (25) | <0.05 e | <0.01 e |
| Yes | 9 (45) | 7 (35) | 15 (75) | ||
| Smoking Status | |||||
| Non-smoker | 8 (40)** | 11 (55) | 17 (85) | <0.005 e | 0.225 e |
| Smoker | 12 (60) | 9 (45) | 3 (15) | ||
| Passive Smoking (at home) | |||||
| No | 12 (60) | 10 (50) | 16 (80) | <0.150 e | <0.048 e |
| Yes | 8 (40) | 10 (50) | 4 (20) | r = 0. 59 f | r = 0.62 f |
* Median (25th-75th)
** Frequency (% of total)
a Car-spray painters v/s Control P-values
b Car-mechanics v/s Control, P-values
c Wilcoxon Signed Rank Test
d Welch test
e Chi-square test
f = correlation between blood NAPH and presence of smoker at home