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Table 2 Mean (Std) values for the target and reference groups at baseline (time 0) and after 10-months (time II) of 25-OHD nmol/l and grip strength; number and frequencies of those unable to perform the upper leg tests

From: Long-term adherence and effects on grip strength and upper leg performance of prescribed supplemental vitamin D in pregnant and recently pregnant women of Somali and Swedish birth with 25-hydroxyvitamin D deficiency: a before-and-after treatment study

  Target group Reference group
N = 46 N = 25
  Time 0 Time II p Time 0 Time II p
25-OHD mean (Std) 15.8 (9.7)a 49.2 (35.4) .001 38.8 (10.3) 67.5 (26.7) .001
Grip strength, N (mean, Std) 153 (55) 188 (57) .001 257 (68) 297 (58) .003
Unable to squat, n (%) 35 (76.1) 9 (19.6) <.001 0 (0) 1 (4.0%) 1.000
Unable to stand on one leg, n (%) 11 (23.9) 11 (23.9) 1.000 1 (4.0) 0 (0) 1.000
Unable to keep hip up, n (%) 10 (21.7) 1 (2.2) .004 1 (4.0) 0 (0) 1.000
  1. a Mean 25-OHD estimated at 9 for n = 17 women with unmeasurable 25-OHD (<10 nmol/L) at Time 0. Significant differences before and after were calculated by Wilcoxon signed-ranks test for interval data and McNemar’s test for dichotomous data