Table 2.
Prevalence ratios and corresponding 95% confidence intervals (CI) for HPV awareness according to selected socio-demographic characteristics and smoking habits among 301 young primiparous women, Sao Paulo, Brazil, 2006-2007
| Total | HPV awareness | Prevalence ratio | 95% CI | P | |
|---|---|---|---|---|---|
| Age (years) | 0.003* | ||||
| 15-18 | 90 | 26.7% | 1 | ||
| 19-21 | 119 | 35.3% | 1.32 | [0.87-2.02] | |
| 22-24 | 92 | 47.8% | 1.79 | [1.20-2.69] | |
| Ethnic group | 0.923 | ||||
| White | 190 | 37.9% | 1 | ||
| Black | 31 | 32.3% | 0.85 | [0.50-1.46] | |
| Mulatto | 77 | 35.1% | 0.93 | [0.65-1.32 ] | |
| Indian | 3 | 33.3% | 0.88 | [1.76-4.40 ] | |
| Years of schooling | 0.039* | ||||
| ≤7 | 37 | 29.7% | 1 | ||
| 8 | 67 | 28.4% | 0.95 | [0.51-1.78] | |
| 9 or 10 | 64 | 35.9% | 1.21 | [0.67-2.19] | |
| ≥11 | 133 | 42.9% | 1.44 | [0.85-2.46] | |
| Marital status | 0.093 | ||||
| Living with partner | 245 | 38.8% | 1 | ||
| Single | 56 | 26.8% | 0.69 | [0.44-1.10] | |
| Income1 | 0.054* | ||||
| < 1 | 13 | 38.5% | 1 | ||
| 1-3 | 188 | 31.9% | 0.83 | [0.40-1.70] | |
| 4-6 | 80 | 45.0% | 1.17 | [0.56-2.43] | |
| 7-10 | 11 | 27.3% | 0.71 | [0.22-2.31] | |
| > 10 | 5 | 80.0% | 2.08 | [0.92-4.70] | |
| Smoking habits | 0.493 | ||||
| Never | 231 | 35.5% | 1 | ||
| Ever2 | 70 | 40.0% | 1.13 | [0.81-1.58] |
1 In number of minimum wages per month (one minimum wage = R$250.00 or US$119.80; US$1.00 = R$ 2.09, February 2007). Data missing for 4 participants.
2 Included current and former smokers.
*Chi-square for trend