Table 2.

Comparison of attenders and non-attenders, categorical variables.

	Attenders		Non attenders
	n	%	n	%	χ2	P-value
Male sex	61/101	60.4	35/67	52.2	0.8	0.43
Current smoker	10/101	9.9	14/67	20.9	4.2	0.05
Ex-smoker	55/101	54.5	28/67	41.8	2.2	0.16
Never smoker	36/101	35.6	24/67	35.8	<0.001	1.00
Microalbuminuria present	19/83	22.9	10/67	14.9	1.5	0.30