Table 2.

 Proteinuria and diagnostic test characteristics for spot protein:creatinine ratio in hypertensive pregnant women

Study	% (No) of women with proteinuria*	Range of 24 hour proteinuria (g/day)	Criteria for adequacy of 24 hour urine collection	Timing of spot protein:creatinine ratio relative to 24 hour urine	First voided morning urine tested	Spot protein:creatinine ratio range (mg/mmol)
Al et al 2004w1	21 (39/185)	0-8.2†	Urinary creatinine ≥10 mg/kg/day	Before (morning)	No	0-667†
Durnwald et al 2003w2†	76 (168/220)	0-19†	NS	Before	NS	0-2991
Jaschevatzky et al 1990w3	NS	0.1-9.7†	NS	After	No	15.2-9552.5
Neithardt et al 2002w4	83 (25/30)	0.20-26.5	NS	During (morning)	NS	10-2124
Ramos et al 1999w5	55 (26/47)	0.24-22.3	Urinary creatinine >0.8 g/day	Before	NS	NS
Robert et al 1997w6	41 (29/71)	0.03-12.6	NS	During	No	NS
Rodriguez-Thompson et al 2001w7	50 (69/138)	0-2†	NS	Before	No	0-170†
Saudan et al 1997w8	NS	NS	NS	Before (usually morning)	No	NS
Taherian et al 2006w9	73 (73/100)	0.1-8.2†	NS	Before	No	33.9-9186.9
Valerio et al 2005w10	51 (38/75)	0-15†	Urinary creatinine ≥0.6 g/day	Before (serially§)	NS	0-9200†
Wheeler et al 2007w11	54 (68/126)	0.06-10.8	Urinary creatinine >1 g/day with urine volume >1 l/day	Before	No	1.1-1661
Yamasmit et al 2004w12	69(29/42)	0.70-6.3	NS	Before	No	8-741
Young et al 1996w13	58 (26/45)	0.10-0.8†	Maternal report	Before (66%), after (34%)	No	8-103†

NS=not specified.

*0.3 g/day or more.

†Range abstracted from figure.

‡Urinary catheter was used in 89% of women because they had vaginal bleeding, were post partum, were in active labour, or were taking magnesium sulphate.

§At 8 am to 2 pm, 2 pm to 8 pm, 8 pm to 2 am, and 2 am to 8 am.