Table 7.

Associations between intending to share details of every sexual contact in the last 7 days and sociodemographic characteristics and motivational message, by sample

Participant characteristics	Level	General population		Grindr
		B (95% CI)	P value	B (95% CI)	P value
Gender	Male (including transman)	Ref	–	–	–
	Female (including transwoman)	0.16 (0.07 to 0.24)	<0.001*	–	–
Sexual orientation	Straight or heterosexual	Ref	–	–	–
	Gay, lesbian, bisexual or queer	0.12 (-0.05 to 0.28)	0.16	–	–
Age	Range 18–98 years	0.008 (0.005 to 0.011)	<0.001*	0.003 (−0.005 to 0.011)	0.46
	Quadratic term (age–mean)2	0.00017 (−0.00034 to −0.00001)	0.04	0.0003 (−0.0002 to 0.0008)	0.19
Region	Midlands (East and West)	Ref	–	Ref	–
	South (East, West, East of England)	0.04 (−0.16 to 0.08)	0.50	0.08 (−0.23 to 0.39)	0.60
	North (East, West, Yorkshire and the Humber)	0.07 (−0.19 to 0.06)	0.29	0.31 (−0.05 to 0.68)	0.09
	London	0.05 (−0.11 to 0.22)	0.53	0.12 (−0.25 to 0.49)	0.52
	Devolved nations (Scotland, Wales and Northern Ireland)	0.09 (−0.06 to 0.25)	0.24	0.26 (0.21 to 0.73)	0.27
Dependent child in household	No	Ref	–	Ref	–
	Yes	0.12 (−0.22 to −0.01)	0.03	0.22 (−0.64 to 0.20)	0.30
Employment status	Not working	Ref	–	Ref	–
	Working	0.10 (−0.20 to 0.00)	0.05	0.01 (−0.26 to 0.23)	0.90
Frontline health or social care worker	No	Ref	–	Ref	–
	Yes	0.04 (−0.17 to 0.09)	0.57	0.08 (−0.19 to 0.34)	0.57
Education	GCSE/vocational/A-level/No formal qualifications	Ref	–	Ref	–
	Degree or higher (Bachelors, Masters, PhD)	0.00 (−0.09 to 0.09)	0.97	0.13 (−0.06 to 0.32)	0.19
Ethnicity	White British	Ref	–	Ref	–
	White other	0.29 (−0.51 to −0.08)	0.008	0.00 (−0.25 to 0.25)	0.98
	Black, Asian, other minoritised ethnicity	0.17 (−0.32 to −0.01)	0.03	0.01 (−0.29 to 0.30)	0.97
Marital status	Not partnered	Ref	–	Ref	–
	Partnered	0.03 (−0.08 to 0.15)	0.55	0.10 (−0.11 to 0.32)	0.35
Live alone	Live with someone else	Ref	–	Ref	–
	Live alone	0.04 (−0.17 to 0.08)	0.50	0.21 (0.01 to 0.40)	0.04
Own chronic illness	None	Ref	–	Ref	–
	Present	0.04 (−0.14 to 0.05)	0.40	0.31 (0.11 to 0.51)	0.003
Ever taken PrEP for HIV	No	–	–	Ref	–
	Yes	–	–	0.09 (−0.10 to 0.28)	0.35
Vaccinated for smallpox in 2022	Not vaccinated	–	–	Ref	–
	Vaccinated	–	–	0.07 (−0.28 to 0.14)	0.50
Index of Multiple Deprivation	Deciles (1st=most deprived, 10th=least deprived)	0.00 (−0.02 to 0.02)	0.87	0.03 (−0.02 to 0.08)	0.19
Socioeconomic grade	ABC1	Ref	–	Ref	–
	C2DE	0.12 (−0.21 to −0.03)	0.01	0.04 (−0.22 to 0.29)	0.78
Financial hardship	4 (lowest hardship) to 13 (most hardship)	0.05 (−0.07 to −0.03)	<0.001*	0.02 (−0.07 to 0.04)	0.53
Total no of sexual partners (male and female) in last 3 weeks	0	Ref	–	–	–
	1	0.06 (−0.05 to 0.17)	0.28	–	–
	2–4	0.07 (−0.14 to 0.27)	0.53	–	–
	5 or more	0.09 (−0.45 to 0.28)	0.64	–	–
	Prefer not to say	0.37 (−0.49 to −0.24)	<0.001*	–	–
No of male sexual partners in last 3 weeks	0	–	–	Ref	–
	1	–	–	0.02 (−0.27 to 0.22)	0.84
	2–4	–	–	0.02 (−0.24 to 0.21)	0.90
	5–9	–	–	0.08 (−0.38 to 0.23)	0.62
	10 or more	–	–	0.58 (−0.96 to −0.20)	0.003
	Prefer not to say	–	–	0.09 (−0.52 to 0.34)	0.67
Motivational message	Perceived risk of illness and necessity and efficacy of the response	0.03 (−0.15 to 0.08)	0.55	–	–
	Perceived risk of illness and benefits of the response	0.03 (−0.08 to 0.14)	0.59	–	–
	Perceived risk of illness and low perceived costs of response	0.01 (−0.12 to 0.10)	0.86	–	–
	Control	Ref	–	–	–
Motivational message	All motivational components	–	–	0.06 (−0.23 to 0.10)	0.45
	Control	–	–	Ref	–

A higher score indicates greater intention to share details. Variables were entered into the linear regression model in blocks (block 1: sociodemographic variables and motivational message, block 2: psychological factors). Results for block 2, using pooled estimates are reported.

*p≤0.001.

GCSE, General Certificate of Secondary Education; PrEP, pre-exposure prophylaxis.