A technique to determine the fastest age-adjusted masters marathon world records

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Table 1 Fastest age-adjusted marathon world records (WRadj)

Rank	Name	Date set	Location	Age	Actual	WR/WRpred2	WRadj
Women
1	Tatyana Pozdniakova	6-Mar-05	Los Angeles, USA	50	2:31:05	0.9740193	2:12:40
2	Tatyana Pozdniakova	7-Mar-04	Los Angeles, USA	49	2:30:17	0.9801653	2:13:30
3	Yoko Nakano	23-Nov-12	Otawara, JPN	77	3:53:42	0.9860649	2:14:19
4	Tatyana Pozdniakova	19-Mar-06	Los Angeles, USA	51	2:35:46	0.9922014	2:15:09
5	Tatyana Pozdniakova	13-Oct-02	Providence, USA	47	2:29:00	0.9931888	2:15:17
6	Helga Miketta	13-Oct-13	Essen, DEU	72	3:35:29	0.9932380	2:15:17
7	Emmi Lüthi	26-Apr-09	Zurich, CHE	65	3:12:57	1.0017334	2:16:27
8	Emmi Lüthi	28-Oct-07	Luzern, CHE	63	3:07:48	1.0072151	2:17:12
9	Irina Mikitenko	28-Sep-08	Berlin, DEU	36	2:19:18	1.0083242	2:17:21
10	Tatyana Pozdniakova	3-Mar-02	Los Angeles, USA	46	2:30:26	1.0130790	2:17:59
Men
1	Ed Whitlock	26-Sep-04	Toronto, CN	73	2:54:48	0.9812516	1:59:57
2	Ed Whitlock	10-Apr-05	Rotterdam, NED	74	2:58:40	0.9908487	2:01:07
3	Haile Gebreselasie	28-Sep-08	Berlin, DEU	35	2:03:58	0.9919445	2:01:15
4	Mariko Kipchumba	21-Oct-12	Reims, FR	38	2:06:05	0.9920711	2:01:16
5	Clive Davies	13-Sep-81	Eugene, USA	66	2:42:49	0.9924742	2:01:19
6	Kenneth Mungara	5-Jul-15	Gold Coast, AUS	41	2:08:42	0.9933218	2:01:25
7	Derek Turnbull	12-Apr-92	London, ENG	65	2:41:57	0.9984809	2:02:03
8	Jaouad Gharib	26-Apr-09	London, ENG	36	2:05:27	0.9984906	2:02:03
9	Jaouad Gharib	22-Apr-12	London, ENG	39	2:07:44	0.9988831	2:02:06
10	Mark Kosgei	27-Oct-13	Frankfurt, DEU	37	2:06:16	0.9993758	2:02:10