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Table 4 HPV status of the placenta and maternal factors.

From: Transplacental transmission of Human Papillomavirus

Maternal variable Placental HPV DNA infection
  Positive (n = 12) Negative (n = 37)
Age (years)     
≤ 19 6 (50%) 17 (45.9%)
≥ 20 to ≤ 29 3 (25%) 12 (32.4%)
≥ 30 to ≤ 39 2 (16.7%) 7 (18.9%)
≥ 40 to ≤ 49 1 (8.3%) 1 (2.7%)
Mean for placental HPV DNA positive group (24.3 ± 8.3 years) - - - -
Mean for placental HPV DNA negative group (23.8 ± 8.2 years) - - - -
Race     
White 11 (91.7%) 33 (89.2%)
Non-white 1 (8.3%) 4 (10.8%)
Level of education     
Illiterate - - - -
Elementary (complete or incomplete) 6 (50%) 22 (59.4%)
High school (complete or incomplete) 5 (41.7%) 15 (40.5%)
College (complete or incomplete) 1 (8.3%) - -
Smoking     
No 10 (83.3%) 24 (64.9%)
< 10 cigarettes per day - - 6 (16.2%)
≥ 10 cigarettes per day 2 (16.7%) 7 (18.9%)
Marital status     
Married 3 (25%) 8 (21.6%)
Single 2 (16.7%) 9 (24.3%)
Cohabiting 6 (50%) 19 (51.4%)
Divorced, separated 1 (8.3%) 1 (2.7%)
Marital stability (years)     
≤ 2 8 (66.7%) 26 (70.3%)
≥ 3 to ≤ 5 3 (25%) 7 (18.9%)
≥ 6 1 (8.3%) 4 (10.8%)
Mean for placental HPV DNA positive group (3.1 ± 4.3 years) - - - -
Mean for placental HPV DNA negative group (2.8 ± 4.7 years) - - - -
History of Immunodepression (HIV)*     
No 10 (83.3%) 37 (100%)
Yes 2 (16.7%) - -
  1. Data are reported as number and percentage (in parentheses) of placental positive or negative infection for human papillomavirus. *P < 0.011 indicates a statistically significant difference between the positive and negative groups by Pearson's chi-square test (HIV – acquired immunodeficiency syndrome).