Relative risks in studies used in meta-analysis of refineries and NHL (color coded by location)
Study	RR	lower CI	upper CI	location	cases	years	follow up to	outcome	exposure	all cause SMR
Rushton and Alderson, 1981	1.16	0.58	2.08	8 British oil refineries	11	1950-75	1975	LR SMR	Total cohort (men)	0.84
Rushton, 1993	1.43	0.85	2.26	8 British oil refineries	18	1950-75	1989	LR SMR	Total cohort (men)	0.91
Sorahan et al., 2002	1.22	0.97	1.51	8 British oil refineries	84	1950-74	1998	LR SMR	Total cohort (men)	0.88
Lewis et al., 2000	1.09	0.68	1.65	Canada, Exxon Mobile	22	1964-83	1994	NHL SMR	Total cohort (men-refinery workers)	0.92
Schnatter et al., 1992	1.27	0.69	2.13	Canada, Exxon Mobile	14	1964-83	1983	NHL SMR	Total cohort (Table 5)	0.91
Dagg et al., 1992 (El Segundo)	0.55	0.01	3.05	Chevron, El Segundo	1	1950-86	1986	LR SMR	Employed 30+ years (Table 6)	0.73
Dagg et al., 1992 (El Segundo)	0	0.00	7.45	Chevron, El Segundo	0	1950-86	1986	LR SMR	Hired < 10 years ago	0.30
Dagg et al., 1992 (El Segundo)	0	0.00	2.43	Chevron, El Segundo	0	1950-86	1986	LR SMR	Hired 20-29 years ago	0.67
Dagg et al., 1992 (El Segundo)	0	0.00	4.12	Chevron, El Segundo	0	1950-86	1986	LR SMR	Employed < 5 years	0.72
Dagg et al., 1992 (El Segundo)	0.66	0.18	1.68	Chevron, El Segundo	4	1950-86	1986	LR SMR	Total cohort (Table 3)	0.72
Dagg et al., 1992 (El Segundo)	1.98	0.24	7.14	Chevron, El Segundo	2	1950-86	1986	LR SMR	Hired 10-19 years ago	0.77
Dagg et al., 1992 (El Segundo)	0.65	0.13	1.90	Chevron, El Segundo	3	1950-86	1986	LR SMR	Hired < 1949	0.77
Dagg et al., 1992 (El Segundo)	0.68	0.02	3.76	Chevron, El Segundo	1	1950-86	1986	LR SMR	Hired 1949+	0.78
Dagg et al., 1992 (El Segundo)	0.48	0.01	2.67	Chevron, El Segundo	1	1950-86	1986	LR SMR	Employed 15-29 years	0.80
Dagg et al., 1992 (El Segundo)	1.57	0.19	5.66	Chevron, El Segundo	2	1950-86	1986	LR SMR	Employed 5-14 years	0.83
Dagg et al., 1992 (El Segundo)	0.65	0.08	2.36	Chevron, El Segundo	2	1950-86	1986	LR SMR	Hired 30+ years ago	0.84
Satin et al., 2002 (El Segundo)	0.75	0.24	1.75	Chevron, El Segundo	5	1950-95	1995	LR SMR	Total cohort (men)	0.83
Satin et al., 2002 (El Segundo)	0.78	0.39	1.39	Chevron, El Segundo	11	1950-95	1995	NHL SMR	Total cohort (men)	0.83
Satin et al., 2002 (El Segundo)	0.99	0.32	2.31	Chevron, El Segundo	5	1950-95	1995	NHL SMR	Hired 1949+
Satin et al., 2002 (El Segundo)	0.64	0.23	1.39	Chevron, El Segundo	6	1950-95	1995	NHL SMR	Hired < 1949
Dagg et al., 1992 (Richmond)	0	0.00	4.36	Chevron, Richmond	0	1950-86	1986	LR SMR	Hired < 10 years ago	0.68
Dagg et al., 1992 (Richmond)	1.66	0.34	4.85	Chevron, Richmond	3	1950-86	1986	LR SMR	Hired 10-19 years ago	0.69
Dagg et al., 1992 (Richmond)	1.29	0.71	2.17	Chevron, Richmond	14	1950-86	1986	LR SMR	Total cohort (Table 3)	0.74
Dagg et al., 1992 (Richmond)	0			Chevron, Richmond	0	1950-86	1986	LR SMR	Hired 1949+	0.75
Dagg et al., 1992 (Richmond)	0.74	0.09	2.68	Chevron, Richmond	2	1950-86	1986	LR SMR	Hired 20-29 years ago	0.75
Dagg et al., 1992 (Richmond)	1.40	0.46	3.28	Chevron, Richmond	5	1950-86	1986	LR SMR	Employed 15-29 years	0.76
Dagg et al., 1992 (Richmond)	1.66	0.91	2.79	Chevron, Richmond	14	1950-86	1986	LR SMR	Hired < 1949	0.85
Dagg et al., 1992 (Richmond)	0.41	0.01	2.27	Chevron, Richmond	1	1950-86	1986	LR SMR	Employed 5-14 years	0.86
Dagg et al., 1992 (Richmond)	2.26	0.97	4.45	Chevron, Richmond	8	1950-86	1986	LR SMR	Employed 30+ years (Table 4)	0.86
Dagg et al., 1992 (Richmond)	1.64	0.75	3.12	Chevron, Richmond	9	1950-86	1986	LR SMR	Hired  30+ years ago	0.90
Dagg et al., 1992 (Richmond)	0	0.00	3.02	Chevron, Richmond	0	1950-86	1986	LR SMR	Employed < 5 years	0.97
Satin et al., 2002 (Richmond)	1.44	0.84	2.31	Chevron, Richmond	17	1950-95	1995	LR SMR	Total cohort (men)	0.85
Satin et al., 2002 (Richmond)	1.19	0.80	1.70	Chevron, Richmond	30	1950-95	1995	NHL SMR	Total cohort (men)	0.85
Satin et al., 2002 (Richmond)	0.49	0.13	1.26	Chevron, Richmond	4	1950-95	1995	NHL SMR	Hired 1949+
Satin et al., 2002 (Richmond)	1.51	0.99	2.22	Chevron, Richmond	26	1950-95	1995	NHL SMR	Hired < 1949
Satin et al., 2002 (Rich and El Segundo)	0.99	0.27	2.53	Chevron, Richmond and El Segundo,CA	4	1950-95	1995	LR SMR	Hired 1949+	0.83
Satin et al., 2002 (Rich and El Segundo)	1.26	0.75	1.99	Chevron, Richmond and El Segundo,CA	18	1950-95	1995	LR SMR	Hired < 1949	0.85
Wong et al., 1986 Br J Ind Med., 43, 6-17	0			Chevron, Richmond and El Segundo,CA	0	1950-80	1980	LR SMR	Hired < 10 years ago	0.654
Wong et al., 1986 Br J Ind Med., 43, 6-17	1.627	0.89	2.73	Chevron, Richmond and El Segundo,CA	14	1950-80	1980	LR SMR	Employed 15+ years	0.692
Wong et al., 1986 Br J Ind Med., 43, 6-17	1.287	0.66	2.25	Chevron, Richmond and El Segundo,CA	12	1950-80	1980	LR SMR	Hired 20 + years aao	0.722
Wong et al., 1986 Br J Ind Med., 43, 6-17	1.266	0.74	2.03	Chevron, Richmond and El Segundo,CA	17	1950-80	1980	LR SMR	Total cohort	0.724
Wong et al., 1986 Br J Ind Med., 43, 6-17	1.807	0.58	4.22	Chevron, Richmond and El Segundo,CA	5	1950-80	1980	LR SMR	Hired 10-19 years ago	0.765
Wong et al., 1986 Br J Ind Med., 43, 6-17	0.945	0.19	2.76	Chevron, Richmond and El Segundo,CA	3	1950-80	1980	LR SMR	Employed 5-14 years	0.789
Wong et al., 1986 Br J Ind Med., 43, 6-17	1.645	0.66	3.39	Chevron, Richmond and El Segundo,CA	7	1950-80	1980	LR SMR	Operators	0.795
Wong et al., 1986 Br J Ind Med., 43, 6-17	0			Chevron, Richmond and El Segundo,CA	0	1950-80	1980	LR SMR	Employed < 5 years	0.801
Huebner et al., 1997	0.41	0.13	0.95	Exxon Mobile (all US locations)	5	1979-92	1992	LR SMR	Total cohort (males)	0.57
Hanis et al., 1982, JOM, 24, 203-12	1.25	0.34	3.2	Exxon Mobile, Baton Rouge	4	1970-77	1977	LR SMR	Operators, mechanics, laborers	0.98
Hanis et al., 1982, JOM, 24, 203-12	1.29	0.35	3.3	Exxon Mobile, Baton Rouge	4	1970-77	1977	LR SMR	Hired < 1956	0.98
Huebner et al., 2000	0.49	0.13	1.26	Exxon Mobile, Baton Rouge	4	1970-92	1994	NHL incidence	Hired 1950+	0.75
Huebner et al., 2000	0.91	0.30	2.12	Exxon Mobile, Baton Rouge	5	1970-92	1994	NHL incidence	Operators	0.97
Huebner et al., 2000	1.06	0.67	1.61	Exxon Mobile, Baton Rouge	22	1970-92	1994	NHL incidence	Total cohort (men)	0.97
Huebner et al., 2000	1.44	0.85	2.27	Exxon Mobile, Baton Rouge	18	1970-92	1994	NHL incidence	Hired < 1950	1.04
Huebner et al., 2000	1.40	0.82	2.24	Exxon Mobile, Baton Rouge	17	1970-92	1994	NHL incidence	Hired 40+ years ago	1.07
Huebner et al., 2004 (Baton Rouge)	1.17	0.43	2.55	Exxon Mobile, Baton Rouge	6	1970-82	1997	NHL SMR	Hired 1950+	0.50
Huebner et al., 2004 (Baton Rouge)	1.47	0.98	2.11	Exxon Mobile, Baton Rouge	29	1970-82	1997	NHL SMR	Total cohort (men)	0.76
Huebner et al., 2004 (Baton Rouge)	0			Exxon Mobile, Baton Rouge	0	1970-82	1997	NHL SMR	Employed < 15 years	0.78
Huebner et al., 2004 (Baton Rouge)	2.11	0.91	4.15	Exxon Mobile, Baton Rouge	8	1970-82	1997	NHL SMR	Hired < 1940	0.79
Huebner et al., 2004 (Baton Rouge)	1.46	0.86	2.30	Exxon Mobile, Baton Rouge	18	1970-82	1997	NHL SMR	Employed 30+ years (Table 5)	0.79
Huebner et al., 2004 (Baton Rouge)	2.02	0.92	3.83	Exxon Mobile, Baton Rouge	9	1970-82	1997	NHL SMR	Employed 15-29 years	0.82
Huebner et al., 2004 (Baton Rouge)	1.57	1.00	2.36	Exxon Mobile, Baton Rouge	23	1970-82	1997	NHL SMR	Hired < 1950	0.83
Lewis et al., 2000 (Baton Rouge)	1.38	0.51	3.01	Exxon Mobile, Baton Rouge	6	1970-82	1992	LR SMR	Total cohort (men)	0.73
Hanis et al., 1985 JOM, 27, 283-92	1.30	0.47	2.83	Exxon Mobile, Baton Rouge, Baytown, Bayway	6	1970-77	1977	LR SMR	Total cohort	0.62
Hanis et al., 1985 JOM, 27, 283-92	1.14	0.61	1.96	Exxon Mobile, Baton Rouge, Baytown, Bayway	13	1970-77	1977	LR SMR	Total cohort	0.91
Hanis et al., 1985 JOM, 27, 283-92	0.83	0.38	1.58	Exxon Mobile, Baton Rouge, Baytown, Bayway	9	1970-77	1977	LR SMR	Hired < 1956	0.92
Shallenberger et al., 1992	1.29	0.80	1.97	Exxon Mobile, Baton Rouge, Baytown, Bayway	21	1970-82	1982	LR SMR	Total cohort	0.89
Shallenberger et al., 1992	1.38	0.80	2.21	Exxon Mobile, Baton Rouge, Baytown, Bayway	17	1970-82	1982	LR SMR	Blue collar workers	0.91
Huebner et al., 2004 (Baytown)	0.46	0.06	1.68	Exxon Mobile, Baytown	2	1970-82	1997	NHL SMR	Hired < 1950	0.52
Huebner et al., 2004 (Baytown)	0			Exxon Mobile, Baytown	0	1970-82	1997	NHL SMR	Employed < 15 years	0.67
Huebner et al., 2004 (Baytown)	0.84	0.47	1.39	Exxon Mobile, Baytown	15	1970-82	1997	NHL SMR	Total cohort (men)	0.74
Huebner et al., 2004 (Baytown)	1.59	0.64	3.28	Exxon Mobile, Baytown	7	1970-82	1997	NHL SMR	Employed 15-29 years	0.78
Huebner et al., 2004 (Baytown)	0.66	0.27	1.36	Exxon Mobile, Baytown	7	1970-82	1997	NHL SMR	Employed 30+ years (Table 5)	0.79
Huebner et al., 2004 (Baytown)	0.96	0.51	1.64	Exxon Mobile, Baytown	13	1970-82	1997	NHL SMR	Hired < 1950	0.80
Lewis et al., 2000 (Baytown)	1.36	0.44	3.16	Exxon Mobile, Baytown	5	1970-82	1992	LR SMR	Total cohort (men)	0.70
Lewis et al., 2000 (Bayway)	0.77	0.09	2.78	Exxon Mobile, Bayway	2	1970-82	1992	LR SMR	Total cohort (men)	0.82
Pukkala, 1998	0.30	0.01	3.19	Finland	1	1967-82	1994	NHL incidence	Employed 5+ years (Table 3)	0.81
Pukkala, 1998	1.24	0.64	2.17	Finland	12	1967-82	1994	NHL incidence	Total cohort	0.98
Pukkala, 1998	2.48	0.91	5.40	Finland	6	1967-82	1994	NHL incidence	Employed < 5 years	1.09
Pukkala, 1998	2.01	1.00	3.59	Finland	11	1967-82	1994	NHL incidence	Blue collar workers
Satin et al., 1996	0			Gulf/Chevron, Pt Arthur Tx	0	1937-83	1987	LR SMR	Hired < 10 years ago	0.76
Satin et al., 1996	0.88	0.18	2.57	Gulf/Chevron, Pt Arthur Tx	3	1937-83	1987	LR SMR	Hired 1946+	0.78
Satin et al., 1996	0.73	0.20	1.87	Gulf/Chevron, Pt Arthur Tx	4	1937-83	1987	LR SMR	Hired 20-29 years ago	0.82
Satin et al., 1996	0.34	0.00	1.89	Gulf/Chevron, Pt Arthur Tx	1	1937-83	1987	LR SMR	Hired 10-19 years ago	0.83
Satin et al., 1996	0.27	0.03	0.97	Gulf/Chevron, Pt Arthur Tx	2	1937-83	1987	LR SMR	Employed 30+ years	0.86
Satin et al., 1996	0.72	0.14	2.10	Gulf/Chevron, Pt Arthur Tx	3	1937-83	1987	LR SMR	Employed 20-29 years	0.87
Satin et al., 1996	0.65	0.07	2.35	Gulf/Chevron, Pt Arthur Tx	2	1937-83	1987	LR SMR	Employed 10-19 years	0.87
Satin et al., 1996	0.49	0.18	1.07	Gulf/Chevron, Pt Arthur Tx	6	1937-83	1987	LR SMR	Hired < 1940	0.92
Satin et al., 1996	0.71	0.48	1.01	Gulf/Chevron, Pt Arthur Tx	30	1937-83	1987	NHL SMR	Total cohort (men)	0.92
Satin et al., 1996	0.75	0.15	2.19	Gulf/Chevron, Pt Arthur Tx	3	1937-83	1987	LR SMR	Employed < 10 years	0.96
Satin et al., 1996	0.37	0.15	0.76	Gulf/Chevron, Pt Arthur Tx	7	1937-83	1987	LR SMR	Hourly worker	0.97
Satin et al., 1996	0.91	0.33	1.98	Gulf/Chevron, Pt Arthur Tx	6	1937-83	1987	LR SMR	Hired 30-39 years ago	0.97
Satin et al., 1996	0.30	0.03	1.08	Gulf/Chevron, Pt Arthur Tx	2	1937-83	1987	LR SMR	Hired 40+ years ago	0.99
Satin et al., 1996	0.55	0.15	1.41	Gulf/Chevron, Pt Arthur Tx	4	1937-83	1987	LR SMR	Hired 1940-45	1.02
Satin et al., 1996	0.69	0.14	2.02	Gulf/Chevron, Pt Arthur Tx	3	1937-83	1987	LR SMR	Employed < 1 year	1.10
Wen et al., 1983	0.24	0.07	0.63	Gulf/Chevron, Pt Arthur Tx	4	1937-78	1978	LR SMR	Total cohort (men)	0.84
Wen et al., 1983	0.10	0.00	0.54	Gulf/Chevron, Pt Arthur Tx	1	1937-78	1978	LR SMR	Hourly workers (white men)	0.99
Christie et al. 1991B BJIM, 48, 507	1.20	0.40	2.70	Health Watch cohort (Australian Institue of Petroleum)	5	1981-89	1989	NHL SMR	Total cohort  (men)	0.63
Christie et al., 1991	1.70	0.80	3.10	Health Watch cohort (Australian Institue of Petroleum)	10	1981-89	1989	NHL incidence	Total cohort (men)	0.99
Gun et al., 2003	0.82	0.40	1.47	Health Watch cohort (Australian Institue of Petroleum)	11	1981-96	1996	NHL SMR	Total cohort (men)	0.68
Gun et al., 2003	0.95	0.65	1.35	Health Watch cohort (Australian Institue of Petroleum)	32	1981-96	1996	NHL incidence	Total cohort (men)	0.68
Gun et al., 2006	0.99	0.62	1.50	Health Watch cohort (Australian Institue of Petroleum)	22	1981-99	1999	NHL SMR	Total cohort (men)	0.72
Gun et al., 2006	0.89	0.66	1.18	Health Watch cohort (Australian Institue of Petroleum)	48	1981-99	1999	NHL incidence	Total cohort (men)	0.72
Honda et al., 1995	0.89	0.49	1.49	Illinois refinery	14	1942-89	1990	LR SMR	Total cohort	0.79
Honda et al., 1995	0.96	0.51	1.64	Illinois refinery	13	1942-89	1990	LR SMR	Hourly workers	0.82
McCraw et al., 1985	0			Illinois refinery	0	1973-82	1983	LR SMR	Total cohort (white men)	0.76
Wongsrichanalai et al., 1989	0.99	0.54	1.66	Illinois refinery	14	1940-84	1984	LR SMR	Total cohort	0.77
Wongsrichanalai et al., 1989	1.06	0.56	1.82	Illinois refinery	13	1940-84	1984	LR SMR	Hourly workers	0.79
Rabbe et al., 1998	0.67	0.02	3.73	Mobil, Beaumont, Tx	1	1945-87	1987	LR SMR	Hired < 20 years ago	0.62
Rabbe et al., 1998	0.91	0.11	3.30	Mobil, Beaumont, Tx	2	1945-87	1987	LR SMR	Operators	0.66
Rabbe et al., 1998	0.73	0.15	2.14	Mobil, Beaumont, Tx	3	1945-87	1987	LR SMR	Hired 20-39 years ago	0.78
Rabbe et al., 1998	1.42	0.46	3.32	Mobil, Beaumont, Tx	5	1945-87	1987	LR SMR	Employed 10-29 years	0.81
Rabbe et al., 1998	1.05	0.48	1.99	Mobil, Beaumont, Tx	9	1945-87	1987	LR SMR	Total cohort	0.82
Rabbe et al., 1998	0			Mobil, Beaumont, Tx	0	1945-87	1987	LR SMR	Employed < 10 years	0.83
Rabbe et al., 1998	0.85	0.18	2.49	Mobil, Beaumont, Tx	3	1945-87	1987	LR SMR	Employed 30+ years	0.84
Rabbe et al., 1998	1.40	0.88	2.10	Mobil, Beaumont, Tx	22	1945-87	1987	NHL SMR	Total cohort (males)	0.84
Rabbe et al., 1998	1.45	0.40	3.72	Mobil, Beaumont, Tx	4	1945-87	1987	LR SMR	Hired 40+ years ago	0.94
Rabbe et al., 1998	0			Mobil, Beaumont, Tx	0	1945-87	1987	LR SMR	Hired 1950+
Rabbe et al., 1998	1.10	0.48	2.17	Mobil, Beaumont, Tx	8	1945-87	1987	LR SMR	Hired < 1950
Wong et al., 2001a	1.15	0.31	2.95	Mobil, Beaumont, Tx	4	1945-96	1996	NHL SMR	Employed < 10 years (process workers)	0.64
Wong et al., 2001a	0.93	0.45	1.71	Mobil, Beaumont, Tx	10	1945-96	1996	NHL SMR	Process workers (men)	0.81
Wong et al., 2001a	0.64	0.13	1.86	Mobil, Beaumont, Tx	3	1945-96	1996	NHL SMR	Employed 10-29 years (process workers)	0.85
Wong et al., 2001a	0.67	0.13	1.95	Mobil, Beaumont, Tx	3	1945-96	1996	LR SMR	Employed 30+ years	0.912
Wong et al., 2001a	1.25	0.34	3.20	Mobil, Beaumont, Tx	4	1945-96	1996	LR SMR	Hired 40+ years ago	0.931
Wong et al., 2001a	1.16	0.24	3.40	Mobil, Beaumont, Tx	3	1945-96	1996	NHL SMR	Employed 30+ years (process workers) (Table 10)	0.94
Wong et al., 2001a	0.85	0.37	1.67	Mobil, Beaumont, Tx	8	1945-96	1996	LR SMR	Total cohort (men)	0.959
Wong et al., 2001a	0.97	0.64	1.42	Mobil, Beaumont, Tx	26	1945-96	1996	NHL SMR	Total cohort (men))	0.96
Wong et al., 2001a	0.58	0.01	3.23	Mobil, Beaumont, Tx	1	1945-96	1996	LR SMR	Hired < 20 years ago	0.96
Wong et al., 2001a	0.67	0.13	1.94	Mobil, Beaumont, Tx	3	1945-96	1996	LR SMR	Hired 20-39 years ago	1.004
Wong et al., 2001a	1.41	0.45	3.29	Mobil, Beaumont, Tx	5	1945-96	1996	LR SMR	Employed 10-29 years	1.017
Wong et al., 2001a	0			Mobil, Beaumont, Tx	0	1945-96	1996	LR SMR	Employed < 10 years	1.038
Wong et al., 2001a	0.47	0.01	2.59	Mobil, Beaumont, Tx	1	1945-96	1996	NHL SMR	Hired < 20 years ago (process workers)
Wong et al., 2001a	0.50	0.06	1.82	Mobil, Beaumont, Tx	2	1945-96	1996	NHL SMR	Hired  40+ years ago (process workers)
Wong et al., 2001a	0.75	0.20	1.91	Mobil, Beaumont, Tx	4	1945-96	1996	NHL SMR	Hired 1950+ (all workers)
Wong et al., 2001a	1.51	0.61	3.11	Mobil, Beaumont, Tx	7	1945-96	1996	NHL SMR	Hired 20-39 years ago (process workers)
Wong et al., 2001a	1.03	0.64	1.56	Mobil, Beaumont, Tx	22	1945-96	1996	NHL SMR	Hired < 1950 (all workers)
Wong et al., 2001b	0			Mobil, Torrance, Ca	0	1959-97	1997	LR SMR	Hired < 20 years ago	0.60
Wong et al., 2001b	2.98	0.81	7.64	Mobil, Torrance, Ca	4	1959-97	1997	NHL SMR	Hired < 20 years ago	0.60
Wong et al., 2001b	2.44	0.03	13.60	Mobil, Torrance, Ca	1	1959-97	1997	LR SMR	Employed < 10 years	0.73
Wong et al., 2001b	2.26	0.61	5.79	Mobil, Torrance, Ca	4	1959-97	1997	NHL SMR	Employed < 10 years	0.73
Wong et al., 2001b	0	0.00	5.64	Mobil, Torrance, Ca	0	1959-97	1997	LR SMR	Process employees	0.81
Wong et al., 2001b	0.48	0.01	2.69	Mobil, Torrance, Ca	1	1959-97	1997	LR SMR	Total cohort (males)	0.82
Wong et al., 2001b	1.21	0.56	2.30	Mobil, Torrance, Ca	9	1959-97	1997	NHL SMR	Total cohort (males)	0.82
Wong et al., 2001b	0.83	0.01	4.62	Mobil, Torrance, Ca	1	1959-97	1997	LR SMR	Hired 20-39 years ago	0.83
Wong et al., 2001b	0.58	0.07	2.09	Mobil, Torrance, Ca	2	1959-97	1997	NHL SMR	Hired 20-39 years ago	0.83
Wong et al., 2001b	0			Mobil, Torrance, Ca	0	1959-97	1997	LR SMR	Employed 10-29 years	0.84
Wong et al., 2001b	1.19