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. Author manuscript; available in PMC: 2016 Aug 1.
Published in final edited form as: Acta Obstet Gynecol Scand. 2015 May 13;94(8):852–860. doi: 10.1111/aogs.12665

Table 2.

Mean (95% confidence interval) lipid levels and birthweight z-scores for the total sample and stratified by pre-pregnancy BMI, Pregnancy Outcomes and Community Health Study, 1998–2004a.

Total Sample
N=1207		 Pre-pregnancy BMI <25kg/m2
N=602		 Pre-pregnancy BMI ≥25kg/m2
N=605		 Student t-test
p-value
Mean 95% CI Mean 95% CI Mean 95% CI
Total Cholesterol (mmol/L) 5.80 (5.73 – 5.88) 5.84 (5.74 – 5.94) 5.76 (5.65 – 5.88) 0.172
HDL Cholesterol (mmol/L) 1.74 (1.71 –1.77) 1.83 (1.79 – 1.86) 1.65 (1.61 – 1.69) <0.001*
LDL Cholesterol (mmol/L) 3.01 (2.94 – 3.08) 3.06 (2.97 – 3.15) 2.95 (2.84 – 3.06) 0.072
Triglycerides (mmol/L) 1.96 (1.91 – 2.01) 1.79 (1.73 – 1.84) 2.17 (2.09 – 2.25) <0.001*
Birthweight z-score 0.06 (−0.01 – 0.13) −0.06 (−0.16 - 0.04) 0.19 (0.08 – 0.29) 0.003*

BMI, body mass index; CI, confidence interval; HDLc, high-density lipoprotein cholesterol; LDLc, low-density lipoprotein cholesterol; z, standard score.

a

Lipid-levels were log-transformed to calculate mean values and confidence intervals, then back-transformed for reporting. Student’s t-tests were performed on the log-transformed lipid levels.

*

Significant p-value <0.05 comparing pre-pregnancy BMI <25kg/m2 to pre-pregnancy BMI ≥25kg/m2