Table 9 Comparison of key characteristics between those who submitted blood specimens and those who did not
Characteristics | Obtained blood (Total = 836) | No obtained blood (Total = 489) | χ2 | p-value | ||
|---|---|---|---|---|---|---|
n | % | n | % | |||
Sex | ||||||
 Male | 312 | 59.5 | 212 | 40.5 | 4.69 | 0.030* |
 Female | 524 | 65.4 | 277 | 34.6 |  |  |
Age (year) | ||||||
 15–17 | 492 | 63.1 | 288 | 36.9 | 0.41 | 0.813 |
 18–20 | 248 | 62.3 | 150 | 37.7 |  |  |
 21–24 | 96 | 65.3 | 51 | 34.7 |  |  |
Tribe | ||||||
 Akha | 251 | 55.9 | 198 | 44.1 | 56.42 | < 0.001* |
 Lahu | 110 | 53.1 | 97 | 46.9 |  |  |
 Hmong | 132 | 61.4 | 83 | 38.6 |  |  |
 Yao | 136 | 76.8 | 41 | 23.2 |  |  |
 Karen | 130 | 81.3 | 30 | 18.8 |  |  |
 Lisu | 77 | 65.8 | 40 | 34.2 |  |  |
Sexual experience | ||||||
 Yes | 243 | 60.4 | 159 | 39.6 | 1.73 | 0.188 |
 No | 593 | 64.2 | 330 | 35.8 |  |  |
Known STIs | ||||||
 Yes | 602 | 62.7 | 357 | 37.3 | 0.08 | 0.771 |
 No | 156 | 66.4 | 79 | 33.6 |  |  |
 Not sure | 78 | 59.5 | 53 | 40.5 |  |  |
Alcohol use | ||||||
 Yes | 105 | 63.3 | 61 | 36.7 | 2.15 | 0.341 |
 Ever | 75 | 57.3 | 56 | 42.7 |  |  |
 No | 656 | 63.8 | 372 | 36.2 |  |  |
Smoking | ||||||
 Yes | 70 | 59.8 | 47 | 40.2 | 4.07 | 0.130 |
 Ever | 40 | 53.3 | 35 | 46.7 |  |  |
 No | 726 | 64.1 | 407 | 35.9 |  |  |