Table 3.

Results of random effects regression models for incident lung cancer histologic type by gender.

Effect	Total lung cancer				Squamous cell				Small cell				Adenocarcinoma
	Male		Female		Male		Female		Male		Female		Male		Female
	Coeff	Sig	Coeff	Sig	Coeff	Sig	Coeff	Sig	Coeff	Sig	Coeff	Sig	Coeff	Sig	Coeff	Sig
Period	−7.86	**	−4.64	**	−1.07	**	0.70	**	−2.31	**	−0.48	**	0.93	**	2.76	**
Current smoking	1.45	**	0.52	**	0.67	**	0.36	**	0.40	**	0.35	**	0.46	**	0.49	**
Family poverty	0.96	**	0.74	**	0.62	**	0.32	**	0.23	**	0.23	**	0.30	**	0.38	**
SES			4.45	**			0.95	**			0.42	*			3.02	**
Percent (%) no insurance	−0.40	*	0.03	NS	−0.38	**	−0.10	*	−0.23	**	−0.06	NS	−0.77	**	−0.44	**
Diagnostic radiologist	0.05	**	0.06	**	0.02	**	0.02	**	0.01	*	0.02	**	0.02	**	0.03	**
Physician	−0.26	**	−0.22	**	−0.12	**	−0.07	**	−0.04	**	−0.07	**	−0.05	*	−0.05	**
Black	−0.14	**	−0.11	**	−0.03	*	−0.02	**	−0.07	**	−0.05	**	0.05	**	0.00	NS
American Indian/Alaska Native	−1.00	**	−0.51	**	−0.27	**	−0.16	**	−0.18	**	−0.14	**	−0.16	**	−0.12	**
Asian Pacific Islander (API)	−0.52	**	−0.42	**	0.02	NS	−0.03	**	−0.04	**	−0.03	**	0.00	NS	0.03	*
Hispanic	−0.40	**	−0.25	**	−0.10	**	−0.04	**	−0.07	**	−0.05	**	0.04	*	0.04	*
Interactions
American Indian × API	0.52	**	0.23	**	−0.18	**
Period × current smoking			0.24	**
Period × % no insurance									0.05	*
Pseudo R2	0.61		0.53		0.37		0.24		0.30		0.31		0.22		0.16

Results shown without the intercept.

Coeff, coefficient; Sig, statistical significance; **p < 0.01; *p < 0.05; NS, non-significant.

Model results for males include two socioeconomic (SES) variables: family poverty and percent no insurance at the county level.

Model results for females include three socioeconomic (SES) variables: family poverty, socioeconomic status, and percent no insurance at the county level.