Table 2.

Past medication use and risk of MM in the Los Angeles County Multiple Myeloma Case-Control (LAMMCC) Study, 1985–1992, among all participants.

		Cases (n=278)ˆ n (%)	Controls (n=278)ˆ n (%)	OR (95 % CI)
Amphetamines	no	256 (93.8)	250 (91.6)	1.00 (ref)
	yes	17 (6.2)	23 (8.4)	0.72 (0.38–1.38)
Antibiotics
Erythromycin	no	214 (81.4)	234 (89.0)	1.00 (ref)
	any	49 (18.6)	29 (11.0)	1.85 (1.13–3.03)
	1 course	14 (5.3)	15 (5.7)	1.02 (0.48–2.16)
	2+ courses	35 (13.3)	14 (5.3)	2.73 (1.43–5.22)
				p-trend = 0.003
Penicillin or ampicillin	no	111 (42.0)	102 (38.6)	1.00 (ref)
	yes	153 (58.0)	162 (61.4)	0.87 (0.61–1.23)
Tetracycline	no	174 (68.5)	182 (71.7)	1.00 (ref)
	yes	80 (31.5)	72 (29.3)	1.16 (0.79–1.70)
Non-insulin antidiabetics	no	261 (94.2)	259 (93.5)	1.00 (ref)
	yes	16 (5.8)	18 (6.5)	0.88 (0.44–1.77)
Benzodiazepines	no	206 (74.6)	198 (71.7)	1.00 (ref)
	yes	70 (25.4)	78 (28.3)	0.86 (0.59–1.26)
Gout medication	no	258 (93.1)	263 (94.9)	1.00 (ref)
	yes	19 (6.9)	14 (5.1)	1.38 (0.68–2.82)
NSAIDs*
Indometacin	no	256 (93.4)	254 (92.7)	1.00 (ref)
	yes	18 (6.6)	20 (7.3)	0.89 (0.46–1.73)
All other NSAIDs	no	219 (80.0)	213 (77.7)	1.00 (ref)
	yes	55 (20.0)	61 (22.3)	0.87 (0.58–1.32)
Phenytoin	no	264 (97.1)	269 (98.9)	1.00 (ref)
	yes	8 (2.9)	3 (1.1)	2.71 (0.71–10.34)
Steroids‡	no	193 (71.2)	191 (70.5)	1.00 (ref)
	yes	78 (28.8)	80 (29.5)	0.97 (0.67–1.40)
Sulfonamides	no	215 (81.4)	232 (87.9)	1.00 (ref)
	yes	49 (18.6)	32 (12.1)	1.65 (1.02–2.68)

^ˆNumbers may not add up due to unknown usage;

^*Non-steroidal anti-inflammatory drugs;

^‡Cortisone, prednisone, celestone, or betamethasone