Trends in response rates and respondent characteristics in five National Maternity Surveys in England during 1995–2018

Table 4 PR and APR for response rates by demographic characteristics for the NMS 2014 and 2018

Year of survey				2014				2018
Number sampled				N = 9786				N = 15,528
	PR	95%CI	APR	95%CI	PR	95%CI	APR	95%CI
Age (years)^a
16–24	0.58	0.54, 0.63	0.72	0.65, 0.79	0.51	0.46, 0.56	0.68	0.61, 0.76
25–29	0.82	0.78, 0.87	0.88	0.81, 0.95	0.77	0.72, 0.82	0.86	0.80, 0.93
30–34	1	–	1	–	1	–	1	–
≥ 35	1.02	0.97, 1.08	1.01	0.94, 1.09	1.10	1.04, 1.17	1.11	1.03, 1.19
Marital status^a
Married	1	–	1	–	1	–	1	–
Joint registration (same address)	0.86	0.82, 0.90	0.91	0.85, 0.98	0.76	0.72, 0.81	0.83	0.77, 0.88
Joint registration (different address)	0.51	0.46, 0.56	0.61	0.54, 0.69	0.38	0.33, 0.43	0.48	0.41, 0.55
Sole registration	0.48	0.42, 0.56	0.57	0.48, 0.68	0.41	0.34, 0.49	0.52	0.42, 0.63
Country of birth^a
UK	1	–	1	–	1	–	1	–
Not UK	0.84	0.80, 0.89	0.81	0.75, 0.87	0.74	0.70, 0.79	0.72	0.67, 0.77
Index of multiple deprivation^a
1st (most deprived)	0.55	0.52, 0.59	0.68	0.62, 0.75	0.42	0.39, 0.45	0.56	0.51, 0.62
2nd	0.72	0.68, 0.77	0.83	0.75, 0.91	0.62	0.57, 0.67	0.76	0.69, 0.83
3rd	0.85	0.80, 0.90	0.92	0.84, 1.01	0.78	0.73, 0.84	0.88	0.80, 0.96
4th	0.91	0.85, 0.96	0.95	0.86, 1.04	0.90	0.84, 0.97	0.96	0.87, 1.04
5th (least deprived)	1	–	1	–	1	–	1	–

ISSN: 2049-3258