Table 1. Demographic and clinical characteristics of patients (n = 144) with CIN and ICC treated at the Instituto Nacional de Cancerología-México from 2004 to 2017.
| Variable | CIN (n = 49) | ICC (n = 95) | P-value | ||
|---|---|---|---|---|---|
| n | (%) | n | (%) | ||
| Age | |||||
| <30 | 15 | (30.61%) | 2 | (2.11%) | <0.001 |
| ≥30 | 34 | (69.39%) | 93 | (97.89%) | |
| Smoking statusa | |||||
| Smokers | 5 | (10.20%) | 11 | (11.57%) | 1.00 |
| Non-smokers | 44 | (89.80%) | 84 | (88.43%) | |
| Alcohol consumptionb | |||||
| Positive | 0 | (0.00%) | 4 | (4.21%) | 0.36 |
| Negative | 49 | (100%) | 91 | (95.79%) | |
| Body mass index, kg/m2 | |||||
| Normal (18.5–24.9) | 4 | (15.38%) | 31 | (39.24%) | 0.01 |
| Overweigth (25–29.9) | 7 | (26.92%) | 27 | (34.18%) | |
| Obesity (≥30) | 15 | (57.70%) | 21 | (26.58%) | |
| Unknownc | 23 | 16 | |||
| Hormone contraception usage | |||||
| Yes | 17 | (58.62) | 13 | (32.50%) | |
| No | 12 | (41.38) | 27 | (67.50%) | 0.05 |
| Unknownc | 20 | 55 | |||
| Number of previous sexual partners | |||||
| 1 | 16 | (38.10%) | 22 | (64.71%) | 0.61 |
| ≥2 | 26 | (61.90%) | 12 | (35.29%) | |
| Unknownc | 7 | 61 | |||
| Human Papillomavirus (HPV) | |||||
| 16 | 12 | (63.15%) | 48 | (51.06%) | |
| 18 | 3 | (15.80%) | 14 | (14.90%) | 0.49 |
| Othersd | 4 | (21.05%) | 32 | (34.04%) | |
| Unknownc | 30 | 1 | e | ||
CIN: Cervical intraepithelial neoplasia. ICC: Invasive cervical cancer aSmoking was defined as any tobacco consumption during their lifetime. bAlcohol consumption was defined as any alcohol intake per week. cData not reported in the clinical files, and thus, this category was not included in the comparisons dOther HPVs include types 6, 11, 31, 43, 42, 45 and 58. Bold: statistically significant.