Table 2.

Use, frequency, and duration of aspirin, Tylenol, and Other NSAIDs in the NCI-Maryland NSCLC Case–Control Study

EAAA
Controls, N (%)Cases, N (%)PControls, N (%)Cases, N (%)P
Regular aspirin usea0.290.10
 No498 (49.6)425 (52.1)328 (52.1)233 (57.7)
 Yes506 (50.4)391 (47.9)302 (47.9)171 (42.3)
Daily aspirin use0.0040.08
 Never498 (49.7)425 (52.1)328 (52.1)233 (57.7)
 <1 tablet per day39 (3.9)11 (1.34)11 (1.7)11 (2.7)
 ≥1 tablet per day466 (46.5)380 (46.6)290 (46.0)160 (39.6)
 Missing1010
Duration of aspirin use0.210.06
 Never498 (50.6)425 (52.2)328 (52.1)233 (59.6)
 <3 years106 (10.8)79 (9.6)70 (11.6)51 (13.0)
 ≥3 years381 (38.7)273 (33.4)208 (30.3)107 (27.4)
 Missing19392413
Regular Tylenol usea0.0040.001
 No912 (90.9)706 (86.5)592 (94.0)354 (87.6)
 Yes92 (9.2)110 (13.5)38 (6.0)50 (12.4)
Daily Tylenol use0.010.001
 Never912 (90.9)706 (86.5)592 (94.1)354 (87.6)
 <1 tablet per day27 (27.8)25 (3.1)9 (1.4)10 (2.5)
 ≥1 tablet per day64 (6.4)85 (10.4)28 (4.5)40 (9.9)
 Missing10896
Duration of Tylenol use<0.0001<0.0001
 Never912 (90.8)709 (86.5)592 (93.8)354 (87.6)
 <3 years28 (2.8)69 (8.4)13 (2.1)29 (7.2)
 ≥3 years54 (5.4)33 (4.0)16 (2.5)15 (3.7)
 Missing10896
Daily other NSAIDs use<0.00010.01
 Never830 (82.9)654 (80.5)570 (90.5)345 (85.4)
 <1 tablet per day67 (6.7)27 (3.3)21 (3.3)12 (3.0)
 ≥1 tablet per day104 (10.4)131 (16.1)39 (6.2)47 (11.6)
 Missing/don't know3400
Duration of other NSAIDs use0.01<0.0001
 Never830 (82.8)654 (80.2)570 (90.5)345 (85.4)
 <3 years68 (6.8)88 (10.8)22 (3.5)38 (9.4)
 ≥3 years105 (10.5)74 (9.1)38 (6.0)21 (5.2)
 Missing/don't know1000
  • aRegular use is defined as at least one pill per week for 2 months during the past 5 years.

  • Percentages may not add up to 100% due to missing observations.