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Table 3 A comparison of strict versus relaxed biometry measurements obtained using volume sweep imaging protocol

From: Testing telediagnostic obstetric ultrasound in Peru: a new horizon in expanding access to prenatal ultrasound

Variable

All measurements

(n = 109)

Second trimester only (n = 68)

Third trimester

only (n = 58)

Number of biometry measurements achieved (strict)

2 (0–4)

2 (0–4)

2 (0–4)

Number of biometry measurements achieved (including relaxed)

3 (0–4)

3 (0–4)

3 (0–4)

Estimated gestational age (days)

 Stricta

195 ± 49 (n = 109)

158 ± 27 (n = 60)

242 ± 23 (n = 49)

 Including relaxeda

194 ± 51 (n = 122)

155 ± 28 (n = 67)

243 ± 24 (n = 55)

p-valueb

0.37

0.44

0.58

  1. a values are mean ± standard deviation
  2. busing paired t-test