Table 4 Effect of concomitant use of non‐steroidal anti‐inflammatory drugs (NSAIDs) and hypertension drugs among current users compared with non‐users of either drug.

NSAID use	Hypertension drug use	Cases (n = 1396)	Controls (n = 5000)	Adjusted RR* (95% CI)
No†	No	89	1013	1
Current use	No	22	190	1.06 (0.63 to 1.78)
No	Yes	332	764	2.53 (1.90 to 3.35)
Current use	Yes	162	263	3.76 (2.70 to 5.24)

*Matched on age, sex and calendar year and adjusted for sex, age, calendar year, body mass index, smoking, alcohol, aspirin, steroids, acetaminophen, anticoagulants, diabetes, coronary heart disease, chronic obstructive pulmonary disease, asthma, valvular diseases, rhythm disorders, renal failure, hypertension and hospitalisations in the previous year.

†Includes only non‐use (the remaining 791 cases and 2770 controls who were recent and past users of NSAIDs or hypertension drugs, or both, are not included).

RR, relative risk.