Table 4.
Adjusted geometric means of VOC metabolites among nonusers, marijuana users, and cigarette users. For the categories, refer to Fig. 1. Estimates were computed using sample weighted linear regression models with log10-sCOT and log10-UCre as covariates.
| VOC metabolite | Adjust geometric means (95% CI), ng/mLa |
p-Valuee | R 2 | ||
|---|---|---|---|---|---|
| Non-user | Marijuana userb | Cigarette smokerd | |||
| CEMA | 77.5 (73.4, 81.8) | 82.7 (65.5, 105) | 118 (78.7, 176) | 0.629 | 0.52 |
| 3HPMA | 241 (228, 255) | 274 (229, 328) | 642 (429, 960) | 0.213 | 0.50 |
| AAMA | 40.2 (37.6, 42.9) | 97.1 (72.7, 130) | 67.2 (46.8, 96.7) | <0.001 | 0.52 |
| GAMA | 15.1 (14.1, 16.2) | 29.2 (20.7, 41.1) | 25.1 (18.4, 34.3) | 0.002 | 0.43 |
| CYMA | 1.44 (1.34, 1.56) | 15.4 (8.15, 29) | 24 (15.0, 38.5) | <0.001 | 0.77 |
| DHBMA | 221 (207, 235) | 252 (221, 287) | 257 (195, 339) | 0.070 | 0.66 |
| MHBMA3 | 4.85 (4.44, 5.30) | 7.06 (5.08, 9.81) | 32.4 (18.8, 56) | 0.037 | 0.52 |
| HPMMA | 303 (287, 320) | 316 (261, 383) | 1180 (789, 1766) | 0.689 | 0.56 |
| SCNc | 850 (799, 904) | 1682 (1437, 1969) | 2957 (2364, 3698) | <0.001 | 0.44 |
| AMCC | 84.4 (76.2, 93.4) | 107 (81.4, 141) | 340 (215, 539) | 0.138 | 0.46 |
| PGA | 116 (106, 128) | 139 (105, 183) | 152 (90, 256) | 0.180 | 0.37 |
| 2HPMA | 46.4 (42.6, 50.6) | 49 (39.8, 60.3) | 116 (74.5, 180) | 0.633 | 0.28 |
| MA | 135 (127, 144) | 143 (116, 176) | 221 (143, 343) | 0.645 | 0.55 |
| BMA | 6.60 (6.10, 7.14) | 6.15 (4.53, 8.36) | 6.49 (4.07, 10.4) | 0.678 | 0.35 |
| 2MHA | 27.3 (24.6, 30.4) | 30.3 (21.5, 42.8) | 85.8 (50.7, 145) | 0.612 | 0.29 |
| 3MHA + 4MHA | 174 (157, 194) | 221 (172, 284) | 631 (406, 980) | 0.152 | 0.41 |
| TTCA | 8.64 (7.54, 9.89) | 9.32 (6.21, 14.0) | 4.93 (2.47, 9.87) | 0.730 | 0.13 |
Abbreviations: CI — confidence interval; R2 — coefficient of determination.
Sample sizes for nonusers, recent marijuana users, and cigarette users except thiocyanate were 973,47, and 99, respectively.
Participants used marijuana within 5 days prior to their NHANES physical examination.
Sample sizes of thiocyanate for nonuser, marijuana user, and cigarette user were 3028, 141, and 402, respectively.
Exclusive cigarette smokers were selected if their sCOT was >10 ng/mL, and they self-reported cigarette smoking within the five days prior to examination, but neither used marijuana nor any other tobacco products.
p-Values between recent marijuana user and nonusers using Satterwaite-adjusted F test.