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Table 3 Comparison of daily activity difficulty between low bone mass postmenopausal women with and without hypovitaminosis D

From: Association of back pain with hypovitaminosis D in postmenopausal women with low bone mass

Daily activity difficulty Hypovitaminosis D Without hypovitaminosis D p-value Odds ratio (CI95%)
Number of subjects 2272 7033 -  
Trunk flexion     
Difficulty     
∙Yes 682 (30.0%) 1676 (23.8%) <0.001 1.37 (1.24 – 1.53)
∙No 1568 (69.0%) 5298 (75.3%)   
∙Don’t perform this task 22 (1.0%) 58 (0.8%)   
Difficulty level     
∙None 1568 (69.7%) 5298 (76.0%) <0.001 0.73 (0.65 – 0.81)
∙Some 474 (21.0%) 1209 (17.3%)   1.27 (1.13 – 1.43)
∙Severe 181 (8.0%) 414 (5.9%)   1.39 (1.15 – 1.67)
∙Incapable of 28 (1.2%) 53 (0.8%)   1.64 (1.01 – 2.66)
Lift a 5 kg object from floor     
Difficulty     
∙Yes 744 (32.8%) 1846 (26.2%) <0.001 1.41 (1.27 – 1.57)
∙No 1391 (61.3%) 4880 (69.4%)   
∙Don’t perform this task 136 (6.0%) 307 (4.4%)   
Difficulty level     
∙None 1391 (65.2%) 4881 (72.6%) <0.001 0.71 (0.64 – 0.79)
∙Some 462 (21.6%) 1234 (18.3%)   1.23 (1.09 – 1.39)
∙Severe 211 (9.9%) 479 (7.1%)   1.43 (1.20 – 1.70)
∙Incapable of 70 (3.3%) 131 (1.9%)   1.71 (1.26 – 2.31)
Reach for an object above the head     
Difficulty     
∙Yes 479 (21.1%) 1085 (15.4%) <0.001 1.49 (1.32 – 1.68)
∙No 1750 (77.0%) 5890 (83.8%)   
∙Don’t perform this task 43 (1.9%) 57 (0.8%)   
Difficulty level     
∙None 1750 (78.5%) 5891 (84.5%) <0.001 0.67 (0.60 – 0.76)
∙Some 322 (14.5%) 798 (11.4%)   1.31 (1.13 – 1.51)
∙Severe 129 (5.8%) 249 (3.6%)   1.66 (1.33 – 2.08)
∙Incapable of 27 (1.2%) 36 (0.5%)   2.36 (1.39 – 4.01)
Put own socks on     
Difficulty     
∙Yes 581 (25.6%) 1513 (21.5%) <0.001 1.36 (1.22 – 1.52)
∙No 1511 (66.5%) 5353 (76.1%)   
∙Don’t perform this task 179 (7.9%) 166 (2.4%)   
Difficulty level     
∙None 1511 (72.2%) 5353 (78.0%) <0.001 0.73 (0.66 – 0.82)
∙Some 440 (21.0%) 1178 (17.2%)   1.29 (1.14 – 1.46)
∙Severe 126 (6.0%) 309 (4.5%)   1.36 (1.09 – 1.69)
∙Incapable of 15 (0.7%) 25 (0.4%)   1.98 (0,99 – 3.90)
Getting in and out of a car     
Difficulty     
∙Yes 760 (33.5%) 1901 (27.0%) <0.001 1.38 (1.25 – 1.53)
∙No 1466 (64.6%) 5075 (72.2%)   
∙Don’t perform this task 45 (0.2%) 56 (0.8%)   
Difficulty level     
∙None 1381 (69.6%) 4005 (69.3%) 0.849 1.01 (0.91 – 1.14)
∙Some 526 (26.5%) 1577 (27.3%)   0.96 (0.86 – 1.08)
∙Severe 75 (3.8%) 193 (3.3%)   1.14 (0.86 – 1.50)
∙Incapable of 1 (0.1%) 2 (0.1%)   1.46 (NA)
Standing up about an hour     
Difficulty     
∙Yes 1052 (46.3%) 2542 (36.1%) <0.001 1.56 (1.42 – 1.73)
∙No 1142 (50.3%) 4318 (61.4%)   
∙Don’t perform this task 77 (3.4%) 172 (2.4%)   
Difficulty level     
∙None 1142 (52.1%) 4318 (63.0%) <0.001 0.64 (0.58 – 0.71)
∙Some 701 (32.0%) 1695 (24.7%)   1.43 (1.29 – 1.59)
∙Severe 298 (13.6%) 724 (10.6%)   1.33 (1.15 – 1.54)
∙Incapable of 52 (2.4%) 122 (1.8%)   1.34 (0.95 – 1.88)
Sitting down about half an hour     
Difficulty     
∙Yes 526 (23.2%) 1391 (19.8%) 0.002 1.22 (1.09 – 1.37)
∙No 1737 (76.5%) 5616 (79.9%)   
∙Don’t perform this task 9 (0.4%) 25 (0.4%   
Difficulty level     
∙None 1737 (76.8%) 5616 (80.2%) 0.003 0.82 (0.73 – 0.92)
∙Some 406 (17.9%) 1089 (15.5%)   1.19 (1.05 – 1.35)
∙Severe 116 (5.1%) 283 (4.0%)   1.28 (1.02 – 1.61)
∙Incapable of 4 (0,2%) 18 (0.3%)   0.69 (NA)
  1. Data displayed as number of participants (%).
  2. NA, Not Applicable.
  3. CI, Confidence Interval.