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. Author manuscript; available in PMC: 2017 Oct 1.
Published in final edited form as: Mol Carcinog. 2015 Aug 31;55(10):1449–1457. doi: 10.1002/mc.22387

Table 3.

Odds ratios (95% CI) for colorectal adenoma according to intakes of calcium and magnesium stratified by rs11022858 genotype of PTH, the Tennessee Colorectal Polyp Study13

PTH genotype (rs11022858) All adenomas vs controls Distal adenomas vs controls
Calcium/magnesium <1.7 1.7–2.6 ≥2.6 P-trend <1.7 1.7–2.6 ≥2.6 P-trend
All Cases/Controls 67/127 544/993 663/1699 42/127 321/993 396/1699
  OR (95% CI) 1.00 1.11(0.80–1.55) 0.96(0.69–1.33) 0.131 1.00 1.04(0.71–1.53) 0.93(0.63–1.37) 0.283
 CC/TC  Cases/Controls 54/111 460/840 571/1448 33/111 277/840 340/1448
  OR (95% CI) 1.00 1.23(0.85–1.79) 1.09(0.75–1.59) 0.468 1.00 1.26(0.67–2.37) 1.12(0.59–2.11) 0.771
  CC    Cases/Controls 29/55 199/388 251/648 19/55 125/388 153/648
    OR (95% CI) 1.00 1.19(0.70–2.02) 1.09(0.64–1.85) 0.795 1.00 1.36(0.71–2.62) 1.17(0.60–2.25) 0.601
  TC    Cases/Controls 25/56 261/452 320/800 14/56 152/452 187/800
    OR (95% CI) 1.00 1.30(0.76–2.23) 1.13(0.66–1.93) 0.505 1.00 1.14(0.54–2.41) 1.08(0.51–2.28) 0.882
 TT  Cases/Controls 13/16 84/153 92/251 9/16 44/153 56/251
    OR (95% CI) 1.00 0.74(0.31–1.74) 0.52(0.22–1.23) 0.040 1.00 0.61(0.23–1.63) 0.53(0.20–1.41) 0.248

Total calcium intake (mg/d) <600 600–1000 ≥1000 P-trend <600 600–1000 ≥1000 P-trend
All Cases/Controls 185/362 367/708 722/1749 111/362 220/708 428/1749
   OR (95% CI) 1.00 0.95(0.74–1.22) 0.74(0.56–0.98) 0.0090 1.00 0.94(0.70–1.27) 0.71(0.51–1.00) 0.017
 CC/TC  Cases/Controls 141/303 322/592 622/1504 85/303 191/592 374/1504
   OR (95% CI) 1.00 1.14(0.86–1.52) 0.88(0.64–1.21) 0.119 1.00 1.11(0.79–1.57) 0.83(0.56–1.23) 0.119
  CC    Cases/Controls 60/146 132/260 287/685 35/146 85/260 177/685
    OR (95% CI) 1.00 1.19(0.78–1.83) 1.01(0.63–1.62) 0.719 1.00 1.30(0.77–2.19) 1.05(0.59–1.89) 0.795
  TC    Cases/Controls 81/157 190/332 335/819 50/157 106/332 197/819
    OR (95% CI) 1.00 1.09(0.74–1.61) 0.81(0.52–1.26) 0.115 1.00 1.00(0.63–1.59) 0.73(0.43–1.25) 0.122
 TT  Cases/Controls 44/59 45/116 100/245 26/59 29/116 54/245
  OR (95% CI) 1.00 0.43(0.23–0.80) 0.36(0.18–0.74) 0.012 1.00 0.49(0.23–1.05) 0.38(0.16–0.91) 0.040

Total magnesium intake (mg/d) <250 250–320 ≥320 P-trend <250 250–320 ≥320 P-trend
All Cases/Controls 219/492 192/434 863/1893 126/492 116/434 517/1893
  OR (95% CI) 1.00 0.96(0.74–1.23) 0.80(0.62–1.04) 0.080 1.00 1.01(0.74–1.38) 0.83(0.60–1.14) 0.191
 CC/TC  Cases/Controls 184/409 161/361 740/1629 106/409 96/361 448/1629
   OR (95% CI) 1.00 0.89(0.67–1.19) 0.73(0.54–0.97) 0.026 1.00 0.96(0.68–1.36) 0.79(0.55–1.13) 0.168
  CC    Cases/Controls 68/183 73/178 338/730 37/183 47/178 213/730
    OR (95% CI) 1.00 0.96(0.62–1.50) 0.91(0.57–1.43) 0.670 1.00 1.24(0.72–2.15) 1.20(0.68–2.12) 0.595
  TC   Cases/Controls 116/226 88/183 402/899 69/226 49/183 235/889
    OR (95% CI) 1.00 0.86(0.59–1.27) 0.62(0.42–0.92) 0.013 1.00 0.83(0.52–1.33) 0.60(0.38–0.97) 0.032
 TT   Cases/Controls 35/83 31/73 123/264 20/83 20/73 69/264
   OR (95% CI) 1.00 1.56(0.78–3.10) 1.65(0.78–3.49) 0.213 1.00 1.65(0.71–3.81) 1.43(0.58–3.51) 0.505
1

Phase I + Phase II

2

Unconditional logistic regression models adjusting for age (continuous), sex, race (white, others), education (categorical), recruitment sites, body mass index (categorical), smoking status (former, current, never), alcohol drinking status (former, current, never), physical activity (yes, no), daily intakes of total energy, magnesium or calcium (continuous)

3

The P values for the interactions between calcium/magnesium intake ratio, calcium and magnesium intake (continuous) with rs11022858 genotype were 0.050, 0.239, 0.415 for all adenomas and 0.121, 0.209, 0.377 for distal adenomas.