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Table 1 Descriptive statistics of birth size and cortisol measures by sex, and difference between women and men (t test and χ2 test)

From: Is body size at birth related to circadian salivary cortisol levels in adulthood? Results from a longitudinal cohort study

Measure

Women

Men

Total

 

M (s)

N

M (s)

N

M (s)

N

P value*

Birth size

       

Birth weight(g)

3281 (530)

372

3469 (598)

380

3376 (573)

752

< .001

Birth length(cm)

50.5 (2.2)

366

51.0 (2.5)

379

50.7 (2.4)

745

.002

Ponderal Index (kg/m3)

25.5 (2.4)

366

26.0 (2.9)

379

25.8 (2.7)

745

.008

Preterm or < 2500 g, n (%)

27 (7.3%)

372

33 (8.7%)

380

60 (8.0%)

752

.471

Cortisol at 43y

       

AUC (nmol/L)

3.89 (1.6)

367

4.51 (1.6)

378

4.19 (1.6)

745

< .001

CAR (relative increase)

1.37 (1.6)

358

1.38 (1.7)

364

1.38 (1.7)

722

.861

Bedtime (nmol/L)

1.56 (2.0)

372

1.79 (2.1)

380

1.67 (2.0)

752

.007

  1. For birth size measures, arithmetic means (s) are presented, and for cortisol measures, geometric means (s)
  2. AUC = Area Under the Curve of diurnal cortisol, CAR = Cortisol Awakening Response