Table 5.
Association between blood lead concentration and symptoms of lead poisoning among 112 workers of a car battery industry
| Variable |
Positive
|
Negative
|
P value
|
||
|---|---|---|---|---|---|
| N (%) | Mean±SD (µg/L) | N (%) | Mean±SD (µg/L) | ||
| Headache | 23 (20.5) | 394.13±151.82 | 89 (79.5) | 398.00±184.08 | 0.926 |
| Decreased visual acuity | 21 (18.7) | 420.29±168.51 | 91 (81.3) | 392.10±180.09 | 0.515 |
| Fatigue | 45 (40.1) | 373.02±152.80 | 67 (59.9) | 413.45±191.40 | 0.239 |
| Malaise | 27 (24.1) | 370.89±147.88 | 85 (75.9) | 405.56±185.68 | 0.378 |
| Anhedonia | 16 (14.2) | 394.69±162.10 | 96 (85.8) | 401.54±182.66 | 0.888 |
| Somnolence | 23 (20.5) | 407.43±178.97 | 89 (79.5) | 397.81±179.45 | 0.819 |
| Irritability | 47 (41.9) | 379.13±158.79 | 65 (58.1) | 414.47±191.28 | 0.302 |
| Agitation | 35 (31.2) | 372.63±170.48 | 78 (68.8) | 411.95±181.87 | 0.281 |
| Insomnia | 9 (8.0) | 435.00±172.87 | 103 (92) | 396.72±179.57 | 0.540 |
| Anorexia | 29 (25.8) | 391.28±147.01 | 83 (74.2) | 403.81±189.87 | 0.747 |
| Abdominal pain | 10 (8.9) | 339.60±130.98 | 102 (91.1) | 405.61±181.99 | 0.266 |
| Metal taste in mouth | 30 (26.7) | 430.57±160.11 | 82 (73.3) | 386.88±182.92 | 0.251 |
| Nausea | 9 (8.0) | 448.22±212.26 | 103 (92) | 395.58±175.96 | 0.399 |
| Arthralgia | 46 (41.0) | 406.17±161.08 | 66 (59.0) | 389.88±189.10 | 0.635 |
| Upper extremity weakness | 15 (13.3) | 377.33±181.35 | 97 (86.7) | 401.16±178.65 | 0.632 |
| Lower extremity weakness | 18 (16.0) | 385.94±176.75 | 94 (84) | 400.28±179.53 | 0.756 |
| myalgia | 22 (19.6) | 392.82±195.56 | 90 (80.4) | 401.45±175.38 | 0.840 |
| Paresthesia in hands | 33 (29.4) | 407.27±192.19 | 79 (70.6) | 400.32±171.87 | 0.851 |
| Paresthesia in feet | 40 (35.7) | 400.38±169.34 | 72 (64.3) | 399.44±184.62 | 0.979 |
| Hearing deficit | 13 (11.6) | 339.69±116.25 | 99 (88.4) | 407.58±184.15 | 0.199 |
Data were analyzed using Independent Samples t test