TABLE 12.

Linear regression results from alcohol and smoking exposure predicting HR/fetal movement cross-correlation.

Exposure category	Both sites			South Africa			Northern Plains
	N	Effect size Mean difference (SE)	p val	N	Effect size Mean difference (SE)	p val	N	Effect size Mean difference (SE)	p val
No alcohol	2812	/	/	1709	/	/	1103	/	/
Alcohol low quit early	1473	0.0031 (0.0035)	0.375	677	0.0035 (0.0048)	0.471	760	0.0028 (0.0052)	0.590
Alcohol high quit early	310	−0.0022 (0.0064)	0.727	147	−0.0171 (0.0091)	0.061	163	0.0109 (0.0091)	0.229
Alcohol low continuous	506	0.0081 (0.0053)	0.127	472	0.0064 (0.0056)	0.255	34	0.0098 (0.0188)	0.604
Alcohol moderate continuous	538	0.000061 (0.0052)	0.991	428	−0.0042 (0.0059)	0.481	110	0.0122 (0.0109)	0.261
Alcohol high continuous	270	−0.0032 (0.00701)	0.647	248	−0.0028 (0.0074)	0.704	22	−0.0269 (0.0234)	0.251
No smoking	3372	/	/	1587	/	/	1785	/	/
Smoking quit early	222	−0.0109 (0.0075)	0.142	105	−0.0148 (0.0107)	0.166	117	−0.0049 (0.0106)	0.646
Smoking low continuous	1406	−0.00205 (0.00377)	0.587	1210	0.00095 (0.0042)	0.821	196	−0.0132 (0.0087	0.132
Smoking moderate/high continuous	873	0.00203 (0.00447)	0.650	779	0.0026 (0.0049)	0.593	94	0.0071 (0.0118)	0.547