. Author manuscript; available in PMC: 2022 Jul 5.

Published in final edited form as: Osteoporos Int. 2012 Dec 13;24(7):2049–2059. doi: 10.1007/s00198-012-2233-1

Table 6.

Dietary intake of pyridoxine in relation to hip fracture risk among women stratified by body mass index (BMI) and diabetes status, the Singapore Chinese Health Study, 1993–2010

	Women with BMI <20 kg/m²			Women with BMI ≥20 kg/m²
	Cases	HR^a	95 % CI	Cases	HR^a	95 % CI
Pyridoxine (B6) (mg/1,000 kcal/day)
Q1 (0.37–0.61)	65	1.0		352	1.00
Q2 (0.61–0.69)	27	0.58	0.37–0.92	258	0.86	0.73–1.01
Q3 (0.69–0.78)	40	0.82	0.54–1.24	209	0.77	0.65–0.92
Q4 (0.78–1.76)	32	0.77	0.49–1.22	197	0.78	0.65–0.93
p for trend	0.37			0.002
	Women without diabetes			Women with diabetes
	Cases	HR^b	95 % CI	Cases	HR^b	95 % CI
Pyridoxine (B6) (mg/1,000 kcal /day)
Q1 (0.37–0.61)	348	1.00		69	1.0
Q2 (0.61–0.69)	225	0.79	0.66–0.93	60	1.00	0.70–1.42
Q3 (0.69–0.78)	183	0.73	0.61–0.88	66	1.03	0.73–1.46
Q4 (0.78–1.76)	178	0.75	0.62–0.91	51	0.91	0.62–1.33
p for trend	0.0009			0.705

CI confidence interval

Hazard ratios (HRs) were adjusted for age at recruitment (in years), year of recruitment (1993–1995, 1995–1998), dialect group (Hokkien, Cantonese), level of education in categories (no formal education, primary school, secondary school or higher), total energy intake (in kilocalories per day), smoking status (never, ex-smokers, current smokers), moderate physical activity (none, 2–3 h weekly, 4+ h weekly), dietary calcium intake (quartiles, in milligrams/1,000 kcal/day), dietary soy isoflavones intake (quartiles, in milligrams/1,000 kcal/day), menopausal status (yes, no), use of hormone replacement therapy at recruitment (yes, no), and history of diabetes mellitus and stroke

HRs were adjusted for the all variables listed above plus body mass index (<20, 20–24, 24–28, ≥28 kg/m²) except history diabetes mellitus