Table-II.

Comparison of ultrasonographic parameters.

	Study group before coffee intake (n: 63)	Study group after coffee intake (n: 63)	Control group initial measurements (n: 63)	Control group after starvation (n: 63)	P value
Amniotic fluid index (mm)	68.77±8.3a (66.23-71.32)	92.8±18.9b (87.02-98.57)	69.44±9.1a (65.05-70.43)	67.74±8.8a (65.05-70.43)	<0.001
Fetal renal artery RI	0.85±0.08 (0.82-0.88) (2.07-2.36)	0.86±0.09 (0.83-0.90)	0.84±0.07 (0.82-0.88)	0.83±0.09 (0.81-0.87)	0.874
Fetal renal artery PI	2.21±0.47	2.15±0.53 (1.98-2.31)	2.16±0.53 (2.00-2.33)	2.12±0.52 (2.00-2.32)	0.947

Different superscript letters indicate statistically significant differences. All measurement values are expressed as mean ±SD and 95% confidence interval (CI). RI, resistive index; PI, pulsatility index.