	Systolic BP (mmHg)			95% CI for mean		Combined P value	Diastolic BP (mmHg)			95% CI for mean		Combined P value
Occupational Group	N	Mean	SEM	LB	UB	Combined P value	N	Mean	SEM	LB	UB	Combined P value
Welding metal	42	123.43	1.89	119.61	127.25		42	73.32	1.68	66.92	76.72
Paint pigment	38	119.11	2.05	114.95	123.26	0.055	38	73.95	2.26	69.37	78.53	0.760
Radiator automechanic	37	116.35	2.51	111.27	121.435		37	75.99	1.63	72.68	79.29
Battery worker	37	118.86	2.75	113.29	124.437		37	75.97	1.37	73.22	78.72
Petrol workers	36	11.88	2.55	108.71	119.069		36	74.32	1.89	70.46	78.16