Table 3. Intensity and frequency of pain in workers reporting pain in the arm and forearm at each workstation.

Workstation	Pain in Arm				Pain in Forearm
	Intensity (Ia)		Frequency (Fa)		Intensity (If)		Frequency (Ff)
	M	SD	M	SD	M	SD	M	SD
Manual assembly	26.83	16.84	24.83	12.52	66.83	22.52	54.83	22.18
Programming option 1	36.24	25.65	48.82	24.37	46.24	26.23	48.82	25.16
Controller	42.32	8.23	55.26	18.19	42.32	23.81	55.26	26.32
Scanning	67.97	20.76	77.79	29.94	57.97	24.92	47.79	28.83
Final check	79.26	34.83	68.24	25.56	59.26	26.71	78.24	28.76
Packing	40.85	21.86	51.16	20.55	40.85	22.05	51.16	23.84
Circuit board operator	34.98	20.38	43.34	23.23	34.98	13.43	43.34	26.95
Circuit board assembly	44.17	18.92	42.08	14.43	54.17	24.54	52.08	24.81
Socket assembly 1	57.00	18.33	70.30	32.04	57.00	22.36	70.30	24.83
Electric socket assembly	55.36	24.51	51.48	19.47	47.77	29.53	54.36	23.76
Socket assembly 2	47.77	22.65	54.36	28.87	68.17	37.56	58.75	18.98
Sewing - leather	51.56	29.22	64.52	36.57	81.56	44.56	84.52	37.86
Sewing headrest	68.96	23.76	69.72	29.85	68.96	31.23	69.72	32.64
Sewing armchair backrest	66.27	16.32	65.12	27.82	66.27	35.78	65.12	29.76
Sewing car seat	61.85	28.72	61.87	24.55	50.35	27.65	60.71	25.43
Checking appearance	52.12	16.63	65.38	19.50	62.12	19.50	75.38	27.05
Unpacking circuit board	38.17	25.62	51.91	22.83	38.17	25.39	41.91	28.06
Programming option 2	50.35	28.07	60.71	21.36	35.36	26.13	51.48	27.59
Preliminary sewing	35.36	22.02	59.35	28.54	35.36	22.54	59.35	32.85
Packing TVs	45.71	25.21	60.00	15.01	45.71	17.32	60.00	23.39
Welder	68.17	24.32	58.75	22.45	39.16	21.86	51.11	26.91
Ironworker	39.16	29.61	51.11	31.06	61.85	33.87	51.87	29.54

M: mean, SD: standard deviation