Skip to main content
. 2012 May 17;47(6):2169–2189. doi: 10.1111/j.1475-6773.2012.01419.x

Table 1.

The Percentage of Deliveries According to Type of Diagnostic Technology and Year

Diagnostic Technology 1970 1975 1980 1985 1990 1995 2000 2005
Ultrasound 0 19 78 97 99 100 100 100
Cardiotocography 0 36 86 96 100 100 100 100
ST waveform analysis 0 0 0 0 15 30 38 77
Fetal blood analysis 0 0 19 25 36 47 62 72
Technology index (0–4) 0 0.54 1.82 2.18 2.50 2.77 3.00 3.48