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Logo of bmcpediBioMed Centralsearchsubmit a manuscriptregisterthis articleBMC Pediatrics
 
From:
Published online 2012 March 20. doi: 10.1186/1471-2431-12-33

Table 1

Descriptive statistics by study group

VariableART group
n = 67
SC group
n = 31a
P-value
Maternal Characteristicsn (%)n (%)

Race

 White64 (95.5)27 (90.0)0.37b

 Non-white3 (4.5)3 (10.0)

Education

 < College degree10 (14.9)10 (33.3)0.10b

 College degree26 (38.8)11 (36.7)

 Advanced degree31 (46.3)9 (30.0)

Household income

 < 40 K4 (6.0)7 (23.3)0.02b

 40 K- < 80 K18 (26.9)10 (33.3)

 80 K +45 (67.2)13 (43.3)

Age at child's birth

 Mean (SD)34.1 (3.9)29.6 (4.3)< 0.001c

Time to pregnancy

 Not trying9 (31.0)

 < 12 months18 (62.1)

 ≥ 12 months2 (6.9)

Child Characteristicsn (%)n (%)

Sex

 Female32 (47.8)13 (43.3)0.83b

 Male35 (52.2)17 (56.7)

Plurality

 Singleton44 (65.7)30 (100.0)< 0.001b

 Twins+23 (34.3)0 (0.0)

Year of birth

 20057 (10.4)9 (30.0)0.11b

 200623 (34.3)8 (26.7)

 200723 (34.3)10 (33.3)

 200814 (20.9)3 (10.0)

Birth weight (grams)

 mean (SD)3005.57 (790.9)3458.1 (701.9)0.008c

Age (years)

 mean (SD)2.5 (0.97)3.0 (1.00)0.02c

a One mother did not fill out the questionnaire and is missing all responses

b Fisher's exact test

c Two-sample t-test