Table 1. Demographic characteristics of study patients.

Characteristics	Newly diagnosed MM Patients (N=19 417)		Matched MM patients (N=18 260)		Matched controls (N=18 260)
Age at diagnosis, years, (mean, s.d.)	65.85	12.33	64.89	12.00	64.78	11.95
Gender (N, %)
Male	10 704	55.1%	9795	53.6%	9795	53.6%
Female	8713	44.9%	8465	46.4%	8465	46.4%
Geographic region (N,%)
Northeast	3264	16.8%	3097	17.0%	3097	17.0%
North Central	6145	31.6%	5538	30.3%	5538	30.3%
South	6592	33.9%	6332	34.7%	6332	34.7%
West	3327	17.1%	3211	17.6%	3211	17.6%
Unknown	89	0.5%	82	0.4%	82	0.4%
Location (N, %)
Rural	2913	15.0%	3027	16.6%	2759	15.1%
Urban	16504	85.0%	15 233	83.4%	15 501	84.9%