Feasibility and validity of The Health Improvement Network database of primary care electronic health records to identify and characterise patients with small cell lung cancer in the United Kingdom

Table 3 Cumulative 1-year all-cause mortality and all-cause mortality rates per 100 person-months in patients with newly-diagnosed SCLC, stratified by age and sex

		Sex		Age group (years)
	Total	Male	Female	< 60	60–69	70–79	≥80
Individuals at risk, n	2840	1468	1372	536	948	1011	345
Deaths, %	1998	1081	917	333	632	753	280
Cumulative mortality, % (95% CI)	82.6 (81.1–84.1)	84.8 (82.8–86.73)	80.1 (77.8–82.4)	76.6 (72.6–80.5)	80.0 (77.1–82.7)	85.4 (83.0–87.6)	89.6 (85.9–92.7)
Person-months of observation	20,073	9787	10,287	4399	7110	6603	1961
IR per 100 person-months (95% CI)	9.95 (9.53–10.39)	11.05 (10.41–11.72)	8.91 (8.36–9.51)	7.57(6.80–8.43)	8.89 (8.22–9.61)	11.40 (10.62–12.25)	14.28 (12.70–16.05)

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