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. Author manuscript; available in PMC: 2022 May 25.
Published in final edited form as: Circulation. 2021 May 10;143(21):2032–2044. doi: 10.1161/CIRCULATIONAHA.120.052268

Table 6.

Spontaneous or medically indicated delivery and subsequent risk of stroke, Sweden, 1990-2015.

Cases Rate* HR (95% CI)† P
Preterm
 Spontaneous 310 67.7 1.51 (1.35, 1.70) <0.001
 Medically indicated 482 109.6 1.84 (1.67, 2.03) <0.001
Early term
 Spontaneous 988 46.9 1.10 (1.03, 1.18) <0.001
 Medically indicated 1,009 72.6 1.40 (1.30, 1.50) <0.001
Full-term 5,871 41.9 Reference
*

Stroke incidence rate per 100,000 person-years.

†

Adjusted for maternal age (as Cox model time scale), year of delivery, parity, education, employment, income, region of origin, BMI, smoking, preeclampsia, other hypertensive disorders, and diabetes prior to delivery.