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. Author manuscript; available in PMC: 2016 Jun 1.
Published in final edited form as: Fertil Steril. 2015 Mar 23;103(6):1461–1468. doi: 10.1016/j.fertnstert.2015.02.033

Table 4.

Weighted diagnostic accuracy measures for characteristics of validity of maternally reported assisted reproductive technology treatment for the index birth, Upstate KIDS Study

Characteristic Sensitivity Specificity Positive Predictive Value Negative Predictive Value
Estimate 95% CI Estimate 95% CI Estimate 95% CI Estimate 95% CI
Overall (weighted by exposure or infertility checkbox) 0.93 (0.87, 0.97) 0.99 (0.99, 1.00) 0.80 (0.73, 0.86) 1.00 (1.00, 1.00)
Private insurance
  No 0.98 (0.81, 1.00) 0.99 (0.99, 1.00) 0.34 (0.10, 0.65) 1.00 (1.00, 1.00)
  Yes 0.93 (0.87, 0.97) 0.99 (0.99, 1.00) 0.84 (0.77, 0.89) 1.00 (0.99, 1.00)
Racea
  Other 1.00 (1.00, 1.00) 0.99 (0.97, 1.00) 0.74 (0.39, 0.95) 1.00 (1.00, 1.00)
  White 0.93 (0.87, 0.97) 0.99 (0.99,1.00) 0.83 (0.75, 0.89) 1.00 (1.00, 1.00)
  Black 0.81 (0.35, 0.99) 0.98 (0.96, 0.99) 0.53 (0.20, 0.84) 1.00 (0.98, 1.00)
Educationb
  ≤ High school 0.73 (0.36, 0.95) 0.99 (0.98, 1.00) 0.44 (0.19, 0.71) 1.00 (0.99, 1.00)
  ≥ College 0.95 (0.89, 0.98) 0.99 (0.99, 1.00) 0.84 (0.77, 0.90) 1.00 (1.00, 1.00)
Maternal age (yrs.)
  < 30 0.82 (0.51, 0.97) 0.99 (0.99, 1.00) 0.56 (0.33, 0.77) 1.00 (1.00, 1.00)
  ≥ 30 0.95 (0.89, 0.98) 0.99 (0.98, 0.99) 0.84 (0.76, 0.90) 1.00 (0.99, 1.00
Paternal age (yrs.)
  <30 0.79 (0.31, 0.99) 0.99 (0.99, 1.00) 0.36 (0.14, 0.62) 1.00 (1.00, 1.00)
  ≥30 0.94 (0.88, 0.97) 0.99 (0.99, 1.00) 0.86 (0.79, 0.92) 1.00 (0.99, 1.00)
Parental smoking before/during pregnancya
  No 0.93 (0.87, 0.97) 0.99 (0.99, 1.00) 0.83 (0.75, 0.88) 1.00 (1.00, 1.00)
  Yes 1.00 (1.00, 1.00) 0.99 (0.98, 1.00) 0.42 (0.12, 0.76) 1.00 (1.00, 1.00)
Risk factors during pregnancy
  No 0.96 (0.88, 0.99) 0.99 (0.99, 1.00) 0.79 (0.68, 0.87) 1.00 (1.00, 1.00)
  Yes 0.90 (0.79, 0.97) 0.99 (0.99, 1.00) 0.82 (0.71, 0.90) 1.00 (0.99, 1.00)
WIC participation
  No 0.93 (0.86, 0.97) 0.99 (0.99, 1.00) 0.85 (0.78, 0.90) 1.00 (0.99, 1.00)
  Yes 0.98 (0.84, 1.00) 0.99 (0.99, 1.00) 0.40 (0.17, 0.67) 1.00 (1.00, 1.00)
Abnormal infant conditions
No 0.95 (0.88, 0.98) 0.99 (0.99, 1.00) 0.78 (0.69, 0.86) 1.00 (1.00, 1.00)
Yes 0.91 (0.78, 0.98) 0.99 (0.98, 0.99) 0.85 (0.71, 0.94) 0.99 (0.98, 1.00)
Fetal presentationa
  Cephalic 0.92 (0.84, 0.96) 0.99 (0.99, 1.00) 0.81 (0.73, 0.88) 1.00 (1.00, 1.00)
  Breech 0.99 (0.95, 1.00) 0.99 (0.97, 1.00) 0.87 (0.69, 0.96) 1.00 (0.98, 1.00)
  Other 1.00 (1.00, 1.00) 0.96 (0.88, 0.99) 0.12 (0.01, 0.43) 1.00 (1.00, 1.00)

NOTE: All estimates and confidence intervals (CIs) were rounded to two decimal places. Significance corresponds to the equality of sensitivity and specificity over all values of each characteristic and was assessed using weighted logistic regression.

a

P <0.0001

b

P = 0.03