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Table 4 Validity of ANC indicators from self-reported questionnaire information or the antenatal card

From: Agreement of antenatal care indicators from self-reported questionnaire and the antenatal care card of women in the 2015 Pelotas birth cohort, Rio Grande do Sul, Brazil

IndicatorsSelf-reported with ANC card as the gold standardANC card with self-reported as the gold standard
Sensitivity (%)95% CISpecificity (%)95% CISensitivity (%)95% CISpecificity (%)95% CI
Report of the number of antenatal care visits (≥6)98.6698.21–99.1243.6240.65–46.6081.1179.75–82.4693.0190.71–95.31
Report of the last date of menstrual period99.3399.02–99.651.490.72–2.2772.8671.45–74.2745.7127.78–63.65
Clinical exams
 Weight measurement99.8199.66–99.970.700.02–3.8696.4095.80–96.9912.50.31–41.67
 Symphysis-fundal height measurement99.7199.52–99.893.110.80–5.4393.6292.84–94.4042.1117.27–66.94
 Blood pressure measurement99.9099.80–100.000.00 96.4095.80–97.010.00 
 Gynecological exam88.9387.24–90.6116.3214.86–17.7836.8735.22–38.5272.8469.02–76.59
 Cervical cancer screening test79.9777.01–82.9439.0337.31–40.7423.2421.57–24.9189.4187.75–91.06
 Dental exam36.0228.85–43.1964.0062.45–65.554.753.60–5.8995.2694.41–96.11
 Breast exam54.3450.45–58.2255.0953.37–56.8119.6017.75–21.4685.6984.16–87.21
 Venereal disease research lab (VDRL) test99.8399.68–99.980.290.01–1.6191.2490.34–92.1414.290.36–47.35
Diseases during pregnancy
 Hypertension67.4452.27–82.6174.8473.46–76.222.891.80–3.9799.5299.25–99.79
 Anaemia86.7680.70–92.8359.2157.63–60.797.105.84–8.3699.2098.81–99.59
 Diabetes66.6745.72–87.6191.4890.60–92.374.602.25–6.9499.7899.61–99.95
 Urinary tract infection78.5776.26–80.8870.1068.34–71.8655.3352.99–57.6787.4085.97–88.83
 Sexually transmitted diseases1.830.00–4.8199.0698.73–99.385.260.64–13.6897.2496.71–97.77
Vaccination- Supplements
 Tetanus toxoid vaccination78.5776.26–80.8870.1068.34–71.8661.1859.24–63.1259.6657.04–62.27
 Hepatitis B vaccination70.6768.14–73.1958.4356.50–60.3646.2744.05–48.5079.7277.87–81.57
 Prescription of iron supplements87.2985.16–89.4123.7722.21–25.3327.9026.31–29.5084.6982.17–87.21
Counselling
 Risks of alcohol use during pregnancy81.5867.94–95.2225.6124.22–26.991.060.67–1.4599.3098.73–98.87
 Risks of smoking during pregnancy82.6170.57–94.6524.9123.53–26.281.290.87–1.7199.1898.56–99.80
 Physical exercises such as walking33.330.84–90.6038.0036.47–39.540.040.00–0.1499.8799.65–100.00