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Table 3 Comparison of anthropometric and biophysical profiles between SWSD, No SWSD and non-shift Groups

From: Prevalence, predictors and effects of shift work sleep disorder among nurses in a Nigerian teaching hospital

Variables Shift group Non-shift group p1 p2 p3
SWSD
n = 19
No SWSD
N = 25
n = 44
BMI(kg/m2) (Mean ± SD) 24.8 ± 2.6 24.3 ± 3.9 23.8 ± 2.6 0.630 0.191 0.571
 • Normal weightn (%) 13 (68.4) 15 (60.0) 34 (77.3) 0.565 0.459 0.128
 • Overweightn (%) 6 (31.6) 10 (40.0) 10 (22.7)
SBP (mmHg)(Mean ± SD) 122.1 ± 13.2 113.2 ± 9.9 118.9 ± 12.8 0.014 0.364 0.060
 • Normal n (%) 17 (89.5) 25 (100.0) 41 (93.2) 0.181F 0.633F 0.549F
 • High n (%) 2 (10.5) 0 (0.0) 3 (6.8)
DBP (mmHg) (Mean ± SD) 74.0 ± 7.9 68.4 ± 6.2 71.1 ± 7.6 0.012 0.165 0.143
 • Normal n (%) 18 (94.7) 25 (100.0) 43 (97.7) 0.432* 0.516* 1.000*
 • High n (%) 1 (5.3) 0 (0.0) 1 (2.3)
PP(mmHg) (Mean ± SD) 48.1 ± 10.1 44.8 ± 7.1 47.8 ± 10.1 0.210 0.913 0.073
MABP (mmHg) (Mean ± SD) 90.0 ± 8.7 83.3 ± 6.9 87.0 ± 8.6 0.009 0.178 0.078
Temperature (°C) (Mean ± SD) 38.0 ± 0.5 37.2 ± 0.7 36.8 ± 0.2 < 0.001 < 0.001 0.001
Cortisol (ng/ml) (Mean ± SD) 15.1 ± 3.2 12.8 ± 2.1 12.3 ± 2.0 0.027 < 0.004 0.735
  1. p1 SWSD vs No SWSD groups; p2 SWSD vs non-shift Groups; p3 No SWSD vs non-shift Groups
  2. SWSD Shift Work Sleep Disorder, BMI Body mass index, SBP Systolic blood pressure
  3. FFisher’s exact
  4. *Stands for liklihood ratio
  5. Bold enteries are statistically significant