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Table 1 Characteristics of three study populations at baseline

From: Development of models for cervical cancer screening: construction in a cross-sectional population and validation in two screening cohorts in China

  Cross-sectional population (N = 1915) Screening cohort I (N = 3179) Screening cohort II (N = 3082)
Age (mean±SD) 47.79±9.78 45.22±7.76 42.80±8.85
HPV (%)    
Positive 973 (50.81) 442 (13.90) 526 (17.07)
HPV16/18 positive 639 (33.42) 126 (3.96) 155 (5.03)
Negative 940 (49.09) 2,737 (86.10) 2,556 (82.93)
NA 2 (0.10) 0 (0.00) 0 (0.00)
Cytology (%)    
NILM 897 (46.84) 2846 (89.53) 2544 (82.54)
ASC-US 222 (11.59) 154 (4.84) 330 (10.71)
ASC-H 81 (4.23) 17 (0.53) 27 (0.88)
AGC 14 (0.73) 5 (0.16) 14 (0.45)
LSIL 103 (5.38) 91 (2.86) 121 (3.93)
HSIL/AIS 242 (12.64) 62 (1.95) 39 (1.27)
SCC/ADC 356 (18.59) 4 (0.13) 7 (0.23)
Pathology (%)    
No history of CIN 1085 (56.66) 3039 (95.60) 2996 (97.21)
CIN1 82 (4.28) 62 (1.95) 35 (1.14)
CIN2 61 (3.19) 35 (1.10) 28 (0.91)
CIN3 136 (7.10) 39 (1.23) 21 (0.68)
SCC 506 (26.42) 3 (0.09) 2 (0.06)
ADC 45 (2.35) 1 (0.03) 0 (0.00)
  1. SD standard deviation