Table 1. Trials of vitamin D supplements in pregnancy.

Trial	No.	Location	Intervention	Outcome
Cockburn (1980)	1139	Scotland	400 IU/day or	25(OH)D maternal	↑
			or placebo	Cord	↑
				Infant	↑
Brooke (1980)	126	UK Asian	1,000 IU/day	Ca maternal	↑
			or placebo	Cord	→
				Neonatal	↑
				Maternal weight	↑
Marya (1981)	120	Asian	600,000 IU (×2);	Ca maternal	↑
		Indian	1,200 IU/day	Cord	↑
			or placebo	ALP maternal	↓
				Cord	↓
Marya (1988)	200	Asian	600,000 IU (×2);	Ca/P maternal	↑
		Indian	or placebo	Cord	↑
				ALP maternal	↓
				Cord	↓
Delvin (1986)	34	France	1,000 IU/day;	25(OH)D cord	↑
			or no vit D	Neonatal	↑
Mallet (1986)	68	France	200,000 IU (×1); 1,000 IU/day; or no vit D	25(OH)D maternal with both regimes	↑

↑ elevation; → no change; ↓ decrease; ALP alkaline phosphatase