Table 3a:

The association between cell phone ownership and sexual behaviors for sexually active RCCS participants stratified by gender, and 5-year age groups, from 2010–2016

			Adjusted Odds Ratio § (95% CI)
	N†		Own Personal Cell Phone vs. No cell phone (reference)
Outcomes	Men	Women	For men	For women
Number of sex partners in the past 12 months (0–1 vs 2+)
Ages 15–24 years	6222	8491	1.67(1.47–1.90)***	1.28(1.08–1.53)**
Ages 25–34 years	7872	11372	1.42(1.26–1.61)***	1.64(1.39–1.93)***
Ages 35+ years	7767	9240	1.64(1.44–1.88)***	1.27(0.99–1.62)
Alcohol used before sex (yes vs. no)
Ages 15–24 years	5750	8287	0.85(0.71–1.03)	1.38(1.17–1.63)***
Ages 25–34 years	7721	11134	0.68(0.60–0.78)***	1.31(1.17–1.46)***
Ages 35+ years	7465	7937	0.69(0.60–0.80)***	1.23(1.09–1.39)***
Inconsistent condom use
Ages 15–24 years	6222	8491	0.66(0.57–0.75)***	1.40(1.17–1.67)***
Ages 25–34 years	7872	11372	0.88(0.69–1.12)	0.71(0.57–0.88)**
Ages 35+ years	7767	9240	0.92(0.73–1.15)	0.67(0.56–0.80)***

^*P-value <0.05,

^**<0.01, and

^***<0.001.

^†N are the person-rounds of each stratified group that were used to fit the models for odds ratios.

^§Odds ratio (OR) greater than 1 indicates that a participant who owns a phone has a greater likelihood of engaging in this behavior as compared to someone who does not own a phone. OR less than 1 indicates that a participant who owns a phone has a lower likelihood of engaging in this behavior as compared to someone who does not own a phone.

^§The OR were adjusted for visit rounds, location, SES, religion, education, current marital status, and occupation.