Table 2.

The relative risk of reassessment and re-investigation comparing virtual against F2F clinics adjusting for the confounding effect of age

Age group	Relative risk (95% CI) and p value
	Reassessment	Re-investigation
16–24 years	1.14 (0.11 to 11.59)	–
25–39 years	2.04 (0.82 to 5.10)	0.55 (0.06 to 5.15)
40–59 years	1.94 (1.13 to 3.35)	1.35 (0.66 to 2.73)
60 years	2.54 (1.31 to 4.94)	1.86 (0.80 to 4.33)
Crude	2.17 (1.49 to 3.16)	1.50 (0.88 to 2.54)
Mantel-Haenszel combined	2.09 (1.44 to 3.05)	1.42 (0.84 to 2.40)
P value	0.880	0.577

The relative difference as a measure of confounding (percentage difference) is 3.43% for reassessment and 5.21% for re-investigation. This is less likely to suggest age as confounding.

F2F, face-to-face.