Table 3.

Associations of green space with incident fracture in the Mr. OS and Ms. OS Study (N=3944) ^a

	Model	Quartiles (Q) of green space				P-trend
		Q1	Q2	Q3	Q4
300-m buffer
Non-spinal	No. participants	998	983	977	986
	Case/person-year	108/9395	109/9091	111/9090	151/9159
	Model 1 b	1.00 (ref)	1.04 (0.80, 1.36)	1.04 (0.80, 1.36)	1.43 (1.11, 1.83)	0.003
	Model 2 c	1.00 (ref)	1.02 (0.79, 1.34)	1.03 (0.79, 1.34)	1.40 (1.09, 1.79)	0.036
Major osteoporotic	No. participants	998	983	977	986
	Case/person-year	70/9395	81/9091	80/9090	109/9159
	Model 1 b	1.00 (ref)	1.22 (0.88, 1.68)	1.13 (0.82, 1.56)	1.56 (1.15, 2.11)	0.008
	Model 2 c	1.00 (ref)	1.19 (0.86, 1.63)	1.10 (0.80, 1.52)	1.53 (1.13, 2.07)	0.010
500-m buffer
Non-spinal	No. participants	987	986	991	980
	Case/person-year	102/9311	107/9082	118/9234	152/9107
	Model 1 b	1.00 (ref)	1.03 (0.78, 1.35)	1.14 (0.88, 1.49)	1.48 (1.15, 1.90)	0.001
	Model 2 c	1.00 (ref)	1.03 (0.78, 1.35)	1.13 (0.87, 1.48)	1.45 (1.13, 1.87)	0.001
Major osteoporotic	No. participants	987	986	991	980
	Case/person-year	70/9311	82/9082	85/9234	103/9107
	Model 1 b	1.00 (ref)	1.14 (0.83, 1.57)	1.16 (0.85, 1.60)	1.41 (1.04, 1.92)	0.020
	Model 2 c	1.00 (ref)	1.14 (0.83, 1.57)	1.15 (0.84, 1.58)	1.39 (1.02, 1.88)	0.024

^aThe Cox proportional hazards models were used to estimate hazard ratios and 95% confidence intervals across Q2 to Q4 compared with Q1. P-trends were calculated from the associations of per 1 standard deviation increase in green space with incident fracture.

^bModel 1: adjusted for baseline age, sex, marital status, education level, socioeconomic status, alcohol drinking, smoking, body mass index, physical activity, calcium supplement, number of chronic diseases, previous history of fracture, and family history of fracture.

^cModel 2: model 1 plus baseline whole body bone mineral density.