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. 2017 Nov 30;12(11):e0189038. doi: 10.1371/journal.pone.0189038

Table 1. Proportion of individuals with information on social factors available in Clinical Practice Research Datalink and Hospital Episodes Statistics: Age, sex and database distribution (N = 591037).

Study population stratified (N) Codes available for social factors in CPRD and linked data: proportion* (95% confidence interval)
Marital status codes Living arrangements Residence Religion codes Ethnicity codes IMD Immigration status codes
Cohabitation (yes/no) codes Living alone (yes/no) codes Place of residence codes Homeless (yes/no) codes
Age groups in years (N)
65–69 (183382) 26.10% 21.50% 26.60% 4.60% 4.60% 2.40% 76.90% 82.50% 1.60%
(25.9–26.3) (21.4–21.7) (26.4–26.8) (4.5–4.6) (4.5–4.7) (2.3–2.5) (76.7–77.1) (82.3–82.7) (1.5–1.7)
70–74 (131552) 25.90% 21% 26.60% 5.70% 5.70% 2.70% 80% 82.60% 1.80%
(25.7–26.2) (20.8–21.2) (26.4–26.9) (5.6–5.9) (5.6–5.9) (2.6–2.8) (79.8–80.2) (82.4–82.8) (1.8–1.9)
75–79 (109628) 27.10% 21.40% 27.80% 8.20% 8.20% 2.90% 80.10% 82.30% 1.80%
(26.8–27.3) (21.1–21.6) (27.5–28) (8.1–8.4) (8.1–8.4) (2.8–3) (79.8–80.3) (82–82.5) (1.7–1.9)
80–84 (84473) 28.70% 21.80% 30.30% 13.10% 13.20% 2.70% 81.10% 82% 1.60%
(28.4–29) (21.5–22) (30–30.6) (12.9–13.4) (12.9–13.4) (2.5–2.8) (80.9–81.4) (81.8–82.3) (1.5–1.7)
85–89 (51278) 30.80% 24.30% 37.70% 25.20% 25.30% 2.60% 82.40% 82% 1.40%
(30.4–31.2) (23.9–24.6) (37.3–38.1) (24.8–25.6) (24.9–25.7) (2.5–2.8) (82.1–82.7) (81.6–82.3) (1.3–1.5)
≥90 (30724) 29.50% 23.40% 43.90% 38.20% 38.30% 2.50% 80.70% 81.60% 0.97%
(29–30) (22.9–23.9) (43.3–44.4) (37.7–38.7) (37.8–38.9) (2.3–2.7) (80.2–81.1) (81.1–82) (0.9–1.1)
Gender (N)#
Males (264752) 22.80% 19.60% 24.40% 8.20% 8.30% 2.50% 79.30% 82.30% 1.50%
(22.6–23) (19.5–19.8) (24.3–24.6) (8.1–8.3) (8.2–8.4) (2.5–2.6) (79.2–79.5) (82.2–82.5) (1.5–1.6)
Females (326283) 30.80% 23.50% 33.10% 11.90% 11.90% 2.70% 79.60% 82.30% 1.70%
(30.6–31) (23.4–23.6) (32.9–33.2) (11.8–12) (11.8–12.1) (2.6–2.7) (79.4–79.7) (82.2–82.4) (1.7–1.8)
Database (N)
CPRD database only (591037) 27.20% 21.80% 29% 10% 10.10% 2.60% 55.40% 1.6%
(27.1–27.3) (21.6–21.9) (28.9–29.2) (10.0–10.1) (10.0–10.1) (2.6–2.7) (55.3–55.5) (1.6–1.7)
CPRD & Linked data (591037) 29.20% 10.30% 10.30% 79.40% 82.30%
(29.1–29.3) (10.2–10.3) (10.2–10.4) (79.3–79.5) (82.2–82.4)

* row percentages IMD index of multiple deprivation CPRD Clinical Practice Research Datalink

# 2 individuals had indeterminate gender