Table 5.
Demographic and descriptive characteristics of Trial participants at enrollment
| Characteristics | N=20,330 | %‡ |
|---|---|---|
|
| ||
| Age (years) | ||
| 12 | 4857 | 23.9 |
| 13 | 4026 | 19.8 |
| 14 | 3958 | 19.5 |
| 15 | 3855 | 19.0 |
| 16 | 3634 | 17.9 |
|
| ||
| Region † | ||
| GAM East | 7826 | 38.5 |
| GAM West | 6307 | 31.0 |
| Pacific | 4983 | 24.5 |
| North | 1214 | 6.0 |
|
| ||
| Highest level of education completed | ||
| Primary or lower | 8437 | 41.9 |
| Secondary | 11709 | 58.1 |
| University | 1 | 0.0 |
| Technical School | 12 | 0.1 |
| DK/Refuse/Missing | 171 | |
|
| ||
| Smoking | ||
| Never | 17853 | 88.2 |
| Ever | 2388 | 11.8 |
| DK/Refuse/Missing | 89 | |
|
| ||
| BMI-for-age †† | ||
| Thinness/wasting (Z-score < −2SD) | 309 | 1.5 |
| Normal (Z-score between ≥−2 SD and ≤+1 SD) | 13028 | 64.1 |
| Overweight/obese (Z-score >+1 SD) | 6993 | 34.4 |
|
| ||
| Age at menarche (years) | ||
| Menses have not started | 2071 | 10.4 |
| 10 or under | 3325 | 16.6 |
| 11 | 5420 | 27.1 |
| 12 | 6142 | 30.8 |
| 13 | 2310 | 15.2 |
| 14+ | 705 | 6.3 |
| DK/Refuse/Missing | 357 | |
|
| ||
| Ever pregnant | ||
| No | 20084 | 98.8 |
| Yes | 246 | 1.2 |
|
| ||
| Hormonal contraceptive use | ||
| Never | 18843 | 92.7 |
| Ever | 1487 | 7.3 |
|
| ||
| Ever had genital warts | ||
| Not queried (<15 years old) | 12841 | |
| No | 7414 | 99.0 |
| Yes | 74 | 1.0 |
| DK/Refuse/Missing | 1 | |
|
| ||
| Ever had sex with a man | ||
| Not queried (<15 years old) | 12838 | |
| Never | 4969 | 67.7 |
| Ever | 2372 | 32.3 |
| DK/Refuse/Missing | 151 | |
|
| ||
| Age at sexual debut | ||
| Not queried (<15 years old) | 12838 | |
| No sexual debut | 4969 | 68.0 |
| ≤14 | 1040 | 14.2 |
| 15 | 957 | 13.1 |
| 16 | 343 | 9.7 |
| DK/Refuse/Missing | 183 | |
|
| ||
| Lifetime number of sexual partners among sexually active | ||
| Not queried (<15 years old) | 12838 | |
| 0 | 4969 | |
| 1 | 1423 | 62.1 |
| 2 | 455 | 19.9 |
| 3+ | 414 | 18.1 |
| DK/Refuse/Missing | 231 | |
|
| ||
| Number of sexual partners in the last 12 months among sexually active | ||
| Not asked (<15 years old) | 12838 | |
| No sexual debut | 4969 | |
| None | 452 | 19.5 |
| 1 | 1431 | 61.9 |
| 2 | 293 | 12.7 |
| 3+ | 137 | 5.9 |
| DK/Refuse/Missing | 210 | |
GAM, Greater Metropolitan Area; DK, Don’t know; BMI, Body mass index.
‡
Don’t know, refuse and missing values are not taken into account for the calculation of the percentages.
†
GAM East includes districts from Cartago and San Jose provinces; GAM West includes districts from Alajuela and Heredia provinces; Pacific includes districts from Guanacaste, parts of Puntarenas provinces and from Upala canton; North includes districts from San Carlos canton.
††
BMI-for-age Z-scores calculated based on the WHO standards for children and adolescents between 5 and 19 years.