Table 1.
Individual-Level Empirical Network Statistics for Sexual Networks of Men Who Have Sex with Men (MSM) in San Francisco and Atlanta
| Main Partnerships | Casual Partnerships | One-Time Partnerships | ||||
|---|---|---|---|---|---|---|
| San Francisco | Atlanta | San Francisco | Atlanta | San Francisco | Atlanta | |
| Momentary Degree, Mean (95% CIa) | ||||||
| Overall | 0.47 (0.36, 0.60) | 0.40 (0.32, 0.49) | 0.88 (0.73, 1.06) | 0.54 (0.45, 0.65) | — | — |
| By Age Group | ||||||
| 15–24 | 0.45 (0.35, 0.59) | 0.37 (0.30, 0.47) | 0.46 (0.38, 0.57) | 0.30 (0.24, 0.36) | — | — |
| 25–34 | 0.57 (0.44, 0.73) | 0.47 (0.38, 0.58) | 0.75 (0.62, 0.90) | 0.48 (0.40, 0.58) | — | — |
| 35–44 | 0.54 (0.42, 0.70) | 0.45 (0.36, 0.56) | 0.96 (0.79, 1.16) | 0.61 (0.51, 0.74) | — | — |
| 45–54 | 0.45 (0.35, 0.58) | 0.37 (0.30, 0.47) | 1.09 (0.91, 1.32) | 0.70 (0.58, 0.85) | — | — |
| 55–64 | 0.34 (0.26, 0.45) | 0.28 (0.22, 0.36) | 1.16 (0.95, 1.40) | 0.74 (0.61, 0.90) | — | — |
| By Race | ||||||
| Black/Hispanic | 0.44 (0.34, 0.58) | 0.37 (0.29, 0.47) | 0.89 (0.73, 1.09) | 0.55 (0.44, 0.67) | — | — |
| White/Other | 0.48 (0.37, 0.62) | 0.40 (0.32, 0.50) | 0.88 (0.73, 1.06) | 0.54 (0.45, 0.65) | — | — |
| Past-Year Cumulative Counts, Mean (95% CI) | ||||||
| Overall | 0.54 (0.42, 0.67) | 0.46 (0.38, 0.56) | 1.2 (1.0, 1.4) | 0.91 (0.78, 1.0) | 10 (9.5, 11) | 4.0 (3.7, 4.2) |
| By Age Group | ||||||
| 15–24 | 0.58 (0.45, 0.74) | 0.49 (0.40, 0.61) | 0.86 (0.73, 1.0) | 0.67 (0.57, 0.78) | 6.1 (5.7, 6.5) | 2.5 (2.3, 2.7) |
| 25–34 | 0.65 (0.51, 0.83) | 0.55 (0.45, 0.67) | 1.1 (0.94, 1.3) | 0.86 (0.74, 0.99) | 9.7 (9.1, 10) | 3.9 (3.7, 4.2) |
| 35–44 | 0.59 (0.46, 0.75) | 0.50 (0.41, 0.61) | 1.3 (1.1, 1.5) | 0.98 (0.84, 1.1) | 12 (11, 10) | 4.7 (4.4, 5.0) |
| 45–54 | 0.48 (0.38, 0.61) | 0.41 (0.33, 0.50) | 1.4 (1.2, 1.6) | 1.1 (0.92, 1.2) | 12 (11, 13) | 4.8 (4.5, 5.2) |
| 55–64 | 0.37 (0.28, 0.47) | 0.31 (0.25, 0.39) | 1.4 (1.2, 1.7) | 1.1 (0.94, 1.3) | 11 (11, 12) | 4.5 (4.2, 4.9) |
| By Race | ||||||
| Black/Hispanic | 0.51 (0.40, 0.66) | 0.44 (0.36, 0.55) | 1.2 (1.0, 1.5) | 0.93 (0.80, 1.1) | 8.9 (8.4, 9.5) | 3.5 (3.3, 3.8) |
| White/Other | 0.54 (0.42, 0.69) | 0.47 (0.38, 0.57) | 1.2 (1.0, 1.4) | 0.90 (0.78, 1.0) | 10 (9.7, 11) | 4.1 (3.8, 4.4) |
| Mean Duration of Partnerships (Weeks)b | ||||||
| Different ages | 216 | 219 | 101 | 105 | — | — |
| Both 15–24 | 70 | 72 | 47 | 48 | — | — |
| Both 25–34 | 247 | 250 | 67 | 70 | — | — |
| Both 35–44 | 521 | 527 | 106 | 110 | — | — |
| Both 45–54 | 664 | 672 | 150 | 155 | — | — |
| Both 55–64 | 1155 | 1168 | 140 | 145 | — | — |
a
CI indicates confidence interval.
b
Stratified based on whether each partner was in the same age group or different age groups.