Chart 4a. All-payer indexes for physicians’ services, medical claims data with a 3-month lag, April 2016–March 2020
Date	Comparison unchained Lowe	Consumer Price Index	Medical claims unchained Lowe (lagged)	Medical claims mixed quantity (lagged)	Medical claims chained Törnqvist (lagged)
Apr 2016	100.00	100.00	100.00	100.00	100.00
May 2016	100.27	100.89	100.10	100.10	100.15
Jun 2016	100.29	101.26	100.13	100.14	100.18
Jul 2016	100.42	101.91	100.06	100.10	100.17
Aug 2016	100.51	102.47	100.44	100.39	100.51
Sep 2016	100.40	102.46	100.45	100.51	100.50
Oct 2016	100.31	102.26	100.51	100.42	100.53
Nov 2016	100.40	102.99	100.59	100.51	100.69
Dec 2016	100.39	103.10	100.88	100.73	100.83
Jan 2017	100.64	103.20	100.98	100.89	100.95
Feb 2017	100.92	103.32	101.26	101.19	101.18
Mar 2017	100.86	102.95	101.39	101.31	101.35
Apr 2017	100.78	101.86	101.48	101.41	101.44
May 2017	100.86	101.67	101.44	101.27	101.34
Jun 2017	100.89	101.28	101.36	101.13	101.27
Jul 2017	100.86	101.35	101.34	101.17	101.28
Aug 2017	101.03	101.62	101.35	101.26	101.31
Sep 2017	101.06	101.66	101.40	101.26	101.36
Oct 2017	101.35	101.64	101.44	101.41	101.41
Nov 2017	101.55	101.09	101.35	101.11	101.32
Dec 2017	101.71	101.28	101.67	101.43	101.60
Jan 2018	101.80	101.64	101.76	101.50	101.69
Feb 2018	101.82	102.01	101.84	101.57	101.77
Mar 2018	101.86	102.09	101.93	101.64	101.85
Apr 2018	101.94	102.18	102.15	101.80	102.04
May 2018	101.82	102.24	102.08	101.80	101.96
Jun 2018	101.95	102.15	102.11	101.76	101.96
Jul 2018	102.18	102.00	101.92	101.55	101.77
Aug 2018	102.29	101.93	101.86	101.72	101.73
Sep 2018	102.16	102.14	101.93	101.87	101.83
Oct 2018	102.33	102.02	101.93	101.68	101.83
Nov 2018	102.44	101.85	101.96	101.79	101.86
Dec 2018	102.43	101.86	102.27	101.98	102.20
Jan 2019	103.24	102.43	102.64	102.57	102.47
Feb 2019	103.50	102.69	102.81	102.70	102.62
Mar 2019	103.65	102.17	103.18	103.29	102.91
Apr 2019	103.83	102.46	103.38	103.42	103.09
May 2019	103.95	102.54	103.32	103.37	103.06
Jun 2019	104.06	102.61	103.01	103.05	102.74
Jul 2019	104.15	102.70	103.24	103.28	102.99
Aug 2019	104.27	102.65	103.37	103.40	103.13
Sep 2019	104.54	103.08	103.53	103.58	103.27
Oct 2019	104.55	103.20	103.40	103.45	103.04
Nov 2019	104.85	103.23	103.60	103.67	103.22
Dec 2019	105.04	103.25	103.23	103.37	102.92
Jan 2020	104.69	103.15	103.51	103.63	103.13
Feb 2020	104.87	103.55	103.72	103.82	103.30
Mar 2020	104.89	103.63	103.90	103.97	103.51
Source: U.S. Bureau of Labor Statistics.