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. 2013 Jul 17;13:663. doi: 10.1186/1471-2458-13-663

Table 5.

Hazard ratios and 95% confidence intervals (CI) for the association between calcium and risk of GI cancer, stratified by overweight (BMI</≥25 kg/m2) in sub-cohort with baseline measurements of BMI

Not Overweight (N = 24,511)
 
 
 
 
 
 
 
Oesophageal cancer
Stomach cancer
Colon cancer
Rectal cancer
Colorectal cancer
  n HR (95% CI) n HR (95% CI) n HR (95% CI) n HR (95% CI) n HR (95% CI)
Calcium (SD: 0.10 mmol/L)
2.02 (1.33-3.07)
 
0.81 (0.57-1.14)
 
1.01 (0.84-1.21)
 
1.10 (0.88-1.38)
 
1.04 (0.91-1.21)
Quartiles of calcium
 
 
 
 
 
 
 
 
 
 
  < 2.32
3
1.00 (Ref)
13
1.00 (Ref)
34
1.00 (Ref)
18
1.00 (Ref)
52
1.00 (Ref)
  2.32-2.38
3
1.04 (0.20-5.30)
11
0.67 (0.28-1.51)
42
1.08 (0.68-1.71)
28
1.72 (0.72-2.38)
70
1.05 (0.91-1.21)
  2.38-2.45
4
1.86 (0.39-8.87)
7
0.53 (0.20-1.37)
33
1.07 (0.65-1.75)
30
1.74 (0.95-3.20
63
1.15 (0.87-1.52)
  ≥ 2.45
7
3.28 (0.73-14.71)
9
0.58 (0.23-1.47)
32
0.91 (0.54-1.55)
20
1.03 (0.52-2.04)
52
0.57 (0.34-0.96)
P-value for trend
 
0.07
 
0.21
 
0.73
 
0.74
 
0.95
Albumin-corrected calcium1
1.93 (1.32-2.82)
 
1.03 (0.61-1.14)
 
1.02 (0.86-1.21)
 
1.10 (0.90-1.35)
 
1.05 (0.93-1.20)
  (SD: 0.09 mmol/L)
 
 
 
 
 
 
 
 
 
 
Quartiles of albumin-corrected calcium1
 
 
 
 
 
 
 
 
  < 2.27
2
1.00 (Ref)
8
1.00 (Ref)
23
1.00 (Ref)
16
1.00 (Ref)
39
1.00 (Ref)
  2.27-2.33
2
0.90 (0.13-6.84)
10
1.08 (0.42-2.73)
31
1.20 (0.70-2.05)
19
1.03 (0.53-2.00)
50
1.13 (0.74-1.71)
  2.33-2.39
3
1.06 (0.18-6.37)
12
1.04 (0.42-2.55)
42
1.30 (0.78-2.16)
29
1.26 (0.68-2.33)
71
1.28 (0.87-1.90)
  ≥ 2.39
10
2.94 (0.64-13.65)
10
0.71 (0.28-1.80)
45
1.12 (0.67-1.86)
32
1.14 (0.62-2.09)
87
1.13 (0.76-1.66)
P-value for trend
 
0.07
 
0.42
 
0.72
 
0.58
 
0.53
Overweight (N = 38,517)
 
 
 
 
 
 
 
 
 
Calcium (SD: 0.10 mmol/L)
0.69 (0.38-1.28)
 
1.04 (0.74-1.46)
 
0.97 (0.81-1.16)
 
0.98 (0.77-1.25)
 
0.97 (0.84-1.13)
Quartiles of calcium
 
 
 
 
 
 
 
 
 
 
  < 2.31
5
1.00 (Ref)
11
1.00 (Ref)
35
1.00 (Ref)
18
1.00 (Ref)
53
1.00 (Ref)
  2.31-2.37
3
0.61 (0.14-2.61)
8
0.66 (0.26-1.65)
35
0.85 (0.53-1.37)
22
1.01 (0.54-1.90)
57
0.91 (0.60-1.32)
  2.37-2.44
1
0.27 (0.03-2.36)
11
1.08 (0.45-2.58)
39
1.09 (0.68-1.75)
16
0.82 (0.41-1.64)
55
0.99 (0.67-1.47)
  ≥ 2.44
3
1.00 (0.21-4.78)
9
1.00 (0.38-2.60)
28
0.83 (0.48-1.42)
21
1.09 (0.55-2.17)
49
0.92 (0.61-1.41)
P-value for trend
 
0.72
 
0.52
 
0.76
 
0.94
 
0.85
Albumin-corrected calcium1
 
 
 
 
 
 
 
 
 
  (SD: 0.09 mmol/L)
 
0.77 (0.44-1.35)
 
1.06 (0.78-1.45)
 
0.99 (0.84-1.17)
 
0.99 (0.79-1.23)
 
0.99 (0.86-1.13)
Quartiles of albumin-corrected calcium1
 
 
 
 
 
 
 
 
  < 2.27
3
1.00 (Ref)
8
1.00 (Ref)
24
1.00 (Ref)
15
1.00 (Ref)
39
1.00 (Ref)
  2.27-2.33
3
0.77 (0.15-3.82)
7
0.65 (0.24-1.79)
31
0.94 (0.55-1.60)
15
0.72 (0.35-1.48)
46
0.85 (0.56-1.31)
  2.33-2.39
3
0.73 (0.15-3.65)
9
0.81 (0.31-2.10)
43
1.26 (0.76-2.08)
23
1.08 (0.56-2.08)
66
1/13 (0.80-1.77)
  ≥ 2.39
3
0.65 (0.13-3.29)
15
1.15 (0.48-2.75)
39
0.95 (0.57-1.59)
24
0.92 (0.48-1.77)
63
0.94 (0.63-1.41)
P-value for trend   0.62   0.52   0.90   0.84   0.83

All models are adjusted for age, sex, SES, albumin (continuous), and Charlson Comorbidity Index.

1 Not adjusted for albumin.