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. 2016 Jan 13;11(1):e0145753. doi: 10.1371/journal.pone.0145753

Table 1. Blood parameters, anthropometric, demographic and reproductive characteristics of the study group.

All women Low gravidity High gravidity
Mean SD Mean SD Mean SD
Age 65.5 8.89 64.8 7.8 66.0 9.58
Age at menopause (years) 50.7 4.51 49.1 5.52 51.5 3.53
Height (cm) 155.7 6.36 156.3 5.85 155.3 6.70
Weight (kg) 75.9 14.91 73.5 15.51 77.6 14.39
BMI (kg/m2) 31.2 5.41 30.0 6.02 33.2 10.12
Abdominal fat% 10.8 2.96 10.2 3.23 11.2 2.72
HCT (%) 41.4 2.12 41.4 2.01 41.3 2.20
Hgb (g/dL) 14.1 0.86 14.1 0.86 14.1 0.87
RBC (mln/μL) 4.6 0.29 4.6 0.31 4.6 0.28
ESR 42.1 18.92 40.7 19.65 43.1 18.52
WBC (tys/μL) 2.0 0.55 2.0 0.51 1.9 0.58
GLU (mmol/L) 6.0 2.10 5.8 2.59 6.1 1.71
HDL (mmol/L)* 1.4 0.35 1.5 0.44 1.3 0.27
LDL (mmol/L) 3.6 1.04 3.7 0.95 3.5 01.10
CRP 3.9 13.80 2.3 2.51 2.67 2.71
Education (years) 8.9 3.03 9.5 3.13 8.5 2.90
Past house work (years) 39.7 16.76 37.4 18.05 43.6 13.96
Past farm work (years) 41.8 13.27 41.4 12.19 42.5 13.84
Past other work (years) 19.7 12.00 19.6 11.63 18.9 12.47
Lifetime pregnancy period (months)** 39.4 16.72 21.4 6.31 48.7 12.65
Lifetime lactation period (months)** 29.4 24.12 13.3 10.68 40.6 27.94
Lifetime reproductive period (years)** 10.4 5.60 6.1 3.69 12.9 5.01
Lifetime energy cost of reproduction (MJ)** 3688.8 2479.47 1753.8 855.00 3884.9 1897.09

Energetic costs of reproduction were estimated based on published values of energetic expenses of pregnancy and lactation [6]. Significant differences between gravidity groups asterisked

*p<0.05

**p<0.001.