Table 3.

Sensitivity analyses

Effect	Estimate	95% confidence interval	P value
Model 5: First outpatient attendances
Sample:1 6298 male and 847 female
Gender effect (additional activity by men)	88	46 to 129	<0.0001
Model 6: Total outpatient attendances
Sample: 6326 male and 858 female
Gender effect (additional activity by men)	270	149 to 390	<0.0001
Model 7: FCEs including only subjects with activity in all months2
Sample: 6128 male and 741 female
Gender effect (additional activity by men)	105	58 to 152	<0.0001
Model 8: Casemix adjusted activity (£000)3including only subjects with activity in all months
Sample: 6128 male and 741 female
Gender effect (additional activity by men)	148	782 to 2172	<0.0001
Model 9: First outpatient attendances including only subjects with activity in all months
Sample: 6067 male and 723 female
Gender effect (additional activity by men)	81	37 to 123	0.0002
Model 10: Total outpatient attendances including only subjects with activity in all months
Sample: 6084 male and 730 female
Gender effect (additional activity by men)	252	127 to 377	<0.0001

Notes:

¹Sample sizes differ due to linking of datasets and some missing variables

²Consultants are excluded from the analysis if they have any months with no NHS activity (FCEs), as this may reflect illness or maternity leave

³Casemix-adjusted activity is estimated by summing the tariff cost of the healthcare related group (HRG) that is assigned to each episode