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Table 1 Crude and Weighted Numbers and Percentages of the Characteristics of People Who Used Methamphetamine

From: Risk factors associated with infection of blood-borne virus among people who used methamphetamine

Variable Overall Blood Borne Virus Positive Blood Borne Virus Negative P-valuea
N (%) Weighted frequency (%) N (%) Weighted frequency (%) N (%) Weighted frequency (%)
Number 1132 11,996,319 125 (11) 1,298,339 (11) 1007 (89) 10,697,980 (89)  
Gender        0.457
 Female 406 (36) 4,187,779 (35) 43 (34) 398,993 (31) 363 (36) 3,788,786 (35)  
Age        < 0.001
 20–29 years 187 (17) 1,779,073 (15) 4 (3) 68,424 (5) 183 (18) 1,710,649 (16)  
 30–39 years 319 (28) 2,968,405 (25) 22 (18) 162,889 (13) 297 (29) 2,805,516 (26)  
 40–49 years 330 (29) 3,554,951 (30) 35 (28) 405,851 (31) 295 (29) 3,149,100 (29)  
 50–59 years 296 (26) 3,693,889 (31) 64 (51) 661,174 (51) 232 (23) 3,032,716 (28)  
Race        0.068
 Non-Hispanic White 724 (64) 9,381,391 (78) 81 (65) 1,042,032 (80) 643 (64) 8,339,359 (78)  
 Non-Hispanic Black 65 (6) 322,951 (3) 14 (11) 65,729 (5) 51 (5) 257,221 (2)  
 Hispanic/Other 343 (30) 2,291,977 (19) 30 (24) 190,577 (15) 313 (31) 2,101,400 (20)  
Poverty index        0.001
  > =2 460 (41) 6,853,711 (57) 26 (21) 454,186 (38) 434 (43) 6,399,526 (62)  
 1 to 1.9 325 (29) 2,749,419 (23) 39 (31) 392,263 (33) 286 (28) 2,357,156 (23)  
 Below threshold 289 (26) 1,902,201 (16) 50 (40) 351,510 (29) 239 (24) 1,550,691 (15)  
 Missing 58 (5) 490,988 (4) 10 (8) 100,380 (8) 48 (5) 390,608 (4)  
Health insurance        0.260
 No 409 (36) 3,532,006 (29) 50 (40) 451,655 (35) 359 (36) 3,080,350 (29)  
Healthcare access        0.353
 No 277 (24) 2,606,354 (22) 30 (24) 331,797 (26) 247 (25) 2,274,556 (21)  
Education        0.007
  < 12 High School 259 (23) 2,059,325 (17) 39 (31) 385,837 (30) 220 (22) 1,673,488 (16)  
Sexual partner        0.209
  < 2 825 (73) 9,005,285 (75) 82 (66) 899,510 (69) 743 (74) 8,105,775 (76)  
  > =2 299 (26) 2,947,253 (25) 39 (31) 379,316 (29) 260 (26) 2,567,937 (24)  
 Missing 8 (1) 43,782 (0) 4 (3) 19,513 (2) 4 (0) 24,269 (0)  
Sexual identity        0.001
 Heterosexual 1060 (94) 11,287,813 (94) 106 (85) 1,081,527 (83) 954 (95) 10,206,286 (95)  
 Other 70 (6) 697,104 (6) 18 (14) 210,072 (16) 52 (5) 487,032 (5)  
 Missing 2 (0) 11,402 (0) 1 (1) 6740 (1) 1 (0) 4662 (0)  
Number of drug use        < 0.001
 1 (only methamphetamine) 97 (9) 856,452 (7) 7 (6) 40,539 (3) 90 (9) 815,912 (8)  
 2 (methamphetamine + heroin or cocaine) 828 (73) 9,139,692 (76) 57 (46) 728,512 (56) 771 (77) 8,411,180 (79)  
 3 (methamphetamine + heroin and cocaine) 207 (18) 2,000,175 (17) 61 (49) 529,288 (41) 146 (14) 1,470,888 (14)  
Injection drug use        < 0.001
 Yes 243 (21) 2,534,473 (21) 80 (64) 701,223 (54) 163 (16) 1,833,250 (17)  
 Missing 1 (0) 7107 (0) 1 (1) 7107 (1) 0 (0) 0 (0)  
Number of times use drug        0.014
  < =5 times 352 (31) 3,938,546 (33) 25 (20) 273,084 (21) 327 (32) 3,665,462 (34)  
 6–49 times 381 (34) 4,192,770 (35) 36 (29) 406,771 (31) 345 (34) 3,785,998 (35)  
  > =50 times 396 (35) 3,848,774 (32) 63 (50) 613,979 (47) 333 (33) 3,234,794 (30)  
 Missing 3 (0) 16,230 (0) 1 (1) 4504 (0) 2 (0) 11,725 (0)  
Age started using methamphetamine        0.001
 10–17 years 291 (26) 3,193,550 (27) 33 (26) 319,933 (25) 258 (26) 2,873,617 (27)  
 18–25 years 576 (51) 6,382,330 (53) 50 (40) 503,483 (39) 526 (52) 5,878,847 (55)  
 > =26 years 261 (23) 2,399,476 (20) 42 (34) 474,923 (37) 219 (22) 1,924,553 (18)  
 Missing 4 (0) 20,963 (0) 0 (0) 0 (0) 4 (0) 20,963 (0)  
  1. a P value for Rao-Scott χ2 test statistic, significance was denoted in bold