Table 2.

Risk of hip/femur fracture associated with current use of BZD from SCCS studies in BIFAP and CPRD without adjustment for event‐exposure dependence

	BIFAP (N = 4450)								CPRD (N = 8333)
			Model crude			Model adjusted by age					Model crude			Model adjusted by age
	Cases	Follow‐up days	IRR	IC (95%)		IRR	IC (95%)		Cases	Follow‐up days	IRR	IC (95%)		IRR	IC (95%)
Past/non‐use	2615	5 169 915	1.00	—	—	1.00	—	—	6060	15 769 427	1.00	—	—	1.00	—	—
Recent use	292	476 872	1.14	1.00	1.29	0.97	0.85	1.10	439	792 974	1.42	1.28	1.57	1.26	1.14	1.39
Current use	1543	2 945 532	1.02	0.94	1.11	0.79	0.72	0.86	1834	3 274 091	1.55	1.45	1.66	1.21	1.13	1.30
1–30 days	213	409 985	0.92	0.80	1.07	0.79	0.68	0.92	342	510 624	1.59	1.42	1.78	1.42	1.27	1.59
31–60 days	201	362 943	0.99	0.85	1.15	0.85	0.73	0.99	253	425 445	1.44	1.27	1.64	1.27	1.11	1.44
61–182 days	314	614 880	0.93	0.82	1.06	0.75	0.66	0.86	383	647 956	1.48	1.33	1.66	1.19	1.06	1.33
183–365 days	246	437 601	1.11	0.95	1.29	0.83	0.71	0.96	300	498 354	1.66	1.46	1.89	1.20	1.05	1.37
>365 days	569	1 120 123	1.28	1.12	1.47	0.73	0.63	0.84	556	1 191 712	1.62	1.43	1.82	0.89	0.79	1.02