Table 1.

Comparison of 1st and multiple IV lignocaine treatment groups

	1st time IV lignocaine treatment	multiple IV lignocaine treatments	statistical analysis
Number	13	37
age (mean, SD)	54.3(4.0)	49.6(10.7)	t(44) = -0.93, NS
sex (f:m)	12:1	28:9	χ2 (1, N = 50) = 0.10, NS
Duration of FMS, yrs, mean (SD)	5.7(5.3)	6.8(4.3)	t(42) = -0.11, NS
pre-treatment hrs in pain (mean, SD)	23.0(2.2)	21.8(4.5)	t(42) = -0.83, NS
co-morbidity	5	9	χ2 (1, N = 50) = 2.87, NS