Examining the quality of record linkage process using nationwide Brazilian administrative databases to build a large birth cohort

Almeida, Daniela; Gorender, David; Ichihara, Maria Yury; Sena, Samila; Menezes, Luan; Barbosa, George C. G.; Fiaccone, Rosimeire L.; Paixão, Enny S.; Pita, Robespierre; Barreto, Mauricio L.

doi:10.1186/s12911-020-01192-0

BMC Medical Informatics and Decision Making

Table 3 Associations between the characteristics of the cohort and the accuracy of the linkage

From: Examining the quality of record linkage process using nationwide Brazilian administrative databases to build a large birth cohort

Characteristics	2001				2014
Characteristics	Linked		Non-linked		Linked		Non-linked
Water supply
Missing	11610	0.78	11610	0.78	50098	4.80	14134	6.21
Public supply	982902	66.10	982902	66.10	735652	70.50	150925	66.29
Well	361618	24.32	361618	24.32	171268	16.41	41885	18.40
Other	130874	8.80	130874	8.80	86481	8.29	20713	9.10
Sanitary sewage
Missing	8188	0.85	22896	1.54	138178	13.24	37445	16.45
Public collection	378673	39.38	616471	41.46	439186	42.09	83050	36.48
Septic tank	158983	16.53	207798	13.97	137642	13.19	31112	13.67
Rudimentary Pit	253761	26.39	371292	24.97	285395	27.35	65959	28.97
Ditch	143119	14.88	237890	16.00	35164	3.37	8143	3.58
Other	18881	1.96	30657	2.06	7934	0.76	1948	0.86
Waste destination
Missing	5518	0.57	11616	0.78	50098	4.80	14134	6.21
Collected	698035	72.59	1035356	69.63	793622	76.05	162792	71.51
Burnt / Buried	173667	18.06	294548	19.81	174553	16.73	44385	19.50
Landfill	75287	7.83	127226	8.56	19263	1.85	4846	2.13
Other	9098	0.95	18258	1.23	5963	0.57	1500	0.66
Education
Missing	33774	3.51	64030	4.31	42891	4.11	8903	8.30
Pre-school	149013	15.50	199390	13.41	14640	1.40	2946	1.29
Literacy	63098	6.56	84264	5.67	84	0.01	27	0.01
Elementary school	204054	21.22	455525	30.63	410	0.04	297	0.13
High school	956	0.10	2062	0.14	187	0.02	83	0.04
College education	52	0.01	108	0.01	0	0.00	2	0.00
Illiteracy	510658	53.10	681625	45.84	985287	94.42	215399	94.62
Race/colour
Missing	21525	2.24	25275	1.70	1	0.00	0	0.00
Caucasian	312717	32.52	474201	31.89	339022	32.49	64997	28.55
Black	56836	5.91	78562	5.28	35608	3.41	7596	3.34
Asian	3465	0.36	4667	0.31	4932	0.47	1203	0.53
Brown	562957	58.54	890725	59.90	654706	62.74	151017	66.34
Indigenous	4105	0.43	13574	0.91	9230	0.88	2844	1.25
Sex
Male	491672	51.13	763571	51.35	533728	51.15	114985	50.51
Female	469933	48.87	723433	48.65	509771	48.85	112672	49.49
Zone
Missing	123	0.01	405	0.03	126	0.01	26	0.01
Urban	724567	75.35	1079682	72.61	808507	77.48	168299	73.93
Rural	236915	24.64	406917	27.36	234866	22.51	59332	26.06

2001- before maternal date of birth was available, 2014- after maternal date of birth was available

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ISSN: 1472-6947

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