Table 4.

Linear regression coefficients, 95% CIs, and P values for association between age at SCC diagnosis and the combination of AFI and number of sex partners at age <20 y

Characteristics
nUnivariate model*
Multivariate model
AFINo. sex partners at age <20 yCoefficient (95% CI)PCoefficient (95% CI)P
≥190-160ReferenceReference
≥19≥264.2 (-0.8 to 9.1)0.102.2 (-2.1 to 6.4)0.32
15-18168-1.9 (-3.9 to 0.2)0.08-2.3 (-4.1 to -0.6)0.01
15-18≥2144-3.7 (-5.5 to -2.0)<0.01-2.5 (-4.0 to -0.9)<0.01
<15123.2 (-5.2 to 11.5)0.463.2 (-4.1 to 10.4)0.39
<15≥246-5.8 (-8.1 to -3.5)<0.01-4.2 (-6.3 to -2.1)<0.01
  • * Univariate model includes only cases with information on all characteristics included in the multivariate model.

  • Adjusted for each other birth year, age at first menses (age <14/≥14 y), and annual income at diagnosis (<$30,000/≥$30,000).