Blood Lead Levels and Health Problems of Lead Acid Battery Workers in Bangladesh

Table 3

Illnesses attributable to lead toxicity and mean blood lead level of workers.

Illnesses attributable to lead toxicity	𝑛=118	Mean BLL (𝜇gm/dL)	Std. dev.	𝑃 value
Headache
Yes	34 (28.8%)	73.09	31.26	𝑡=2.089
No	84 (71.2%)	62.08	23.90	𝑃=0.039
Numbness of limbs
Yes	31 (26.3%)	73.47	34.32	𝑡=2.032
No	87 (73.7%)	62.32	22.73	𝑃=0.044
Colic pain
Yes	20 (16.9%)	79.50	36.09	𝑡=2.700
No	98 (83.1%)	62.34	23.37	𝑃=0.008
Nausea
Yes	13 (11.0%)	79.14	31.89	𝑡=2.024
No	105 (89.0%)	63.53	25.49	𝑃=0.045
Tremor
Yes	25 (21.9%)	77.20	28.66	𝑡=2.593
No	93 (78.1%)	62.04	25.19	𝑃=0.011
Lead line on gum
Yes	33 (28.0%)	73.54	26.25	𝑡=2.143
No	85 (72.0%)	62.01	26.14	𝑃=0.034
Weakness
Yes	47 (39.8%)	68.29	30.66	𝑡=1.011
No	71 (60.2%)	63.24	23.49	𝑃=0.314
Fatigue
Yes	30 (25.4%)	70.48	30.74	𝑡=1.250
No	88 (74.6%)	63.47	24.94	𝑃=0.274
Constipation
Yes	29 (24.6%)	71.45	33.64	𝑡=1.454
No	89 (75.4%)	63.23	23.70	𝑃=0.149
Anorexia
Yes	26 (22.0%)	72.72	33.18	𝑡=1.635
No	92 (78.0%)	63.14	24.18	𝑃=0.105
Pain Limb
Yes	38 (32.2%)	70.97	30.16	𝑡=1.621
No	80 (67.8%)	62.54	24.43	𝑃=0.108
Disturbed sleep
Yes	29 (24.6%)	71.34	30.97	𝑡=1.427
No	89 (75.4%)	63.27	24.65	𝑃=0.156
Drowsiness
Yes	22 (18.6%)	70.85	28.71	𝑡=1.097
No	96 (81.4%)	65.97	26.05	𝑃=0.275