Table 3 Differences at F52 in weight and size-adjusted bone mineral content between mothers who had resumed menstruation and those who had not

From: Bone mineral changes after lactation in Gambian women accustomed to a low calcium intake

 

Resumed (n=8) Mean±s.d.

Not resumed (n=12) Mean±s.d.

% Difference at F52 a Resumed vs. not resumed

   

Mean±s.e.m.

P-value

Weight (kg)

55.9±6.3

53.1±8.0

5.7±6.1

0.4

SA-BMC (g) b

 Whole body

2256±46

2104±134

7.3±2.4

0.008

 Lumbar spine

52.4±2.8

47.3±4.9

10.9±4.2

0.02

 Total hip

28.7±3.5

26.5±2.9

8.1±5.4

0.1

  1. Abbreviations: ANCOVA, analysis of covariance; BA, bone area; BMC, bone mineral content; F52, follow-up lactation at 52 weeks postpartum; SA-BMC, size-adjusted bone mineral content.
  2. aFrom ANCOVA models of BMC with adjustment for BA, weight and height at F52 and with menses (yes/no).
  3. bValues of SA-BMC at each time point calculated by including BA, body weight, and height in a logarithmic model; evaluating the residual for each subject; adding the residual to the loge (mean BMC) value and calculating the antilogarithm.
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