Table 2.
Subgroup analyses of TSC, SC, PR, and TM based on age, continent, income, and abstinence time
| Outcomes | Age (years) | Continent | Income | Abstinence time (days) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 18–29 | 30–39 | Asia | Europe | North America | Oceania | High income | Upper Middle income | 2–3 | 2–4 | 2–7 | ||
| TSC | R2 | 0.91 | 0.77 | 0.79 | 0.57 | 0.73 | 0.48 | 0.93 | 0.71 | 0.99 | 1.00 | 0.90 |
| Regression coefficient (95% CI) | − 2.54 (− 2.75, − 2.32) | − 2.54 (− 3.46, − 1.62) | − 2.16 (− 2.43, − 1.89) | − 2.72 (− 3.02, − 2.43) | − 5.00 (− 6.74, − 3.27) | 2.76 (1.34, 4.17) | − 4.47 (− 4.74, − 4.20) | − 1.58 (− 1.83, − 1.33) | 2.04 (1.97, 2.12) | 3.73 (3.69, 3.77) | − 4.64 (− 5.00, − 4.31) | |
| P value | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
| SC | R2 | 0.87 | 0.70 | 0.94 | 0.98 | 0.88 | / | 0.96 | 0.66 | 0.78 | 1.00 | 0.69 |
| Regression coefficient (95% CI) | − 0.93 (− 0.97, − 0.81) | − 0.73 (− 0.94, − 0.52) | − 1.16 (− 1.21, − 1.10) | − 0.80 (− 0.83, − 0.77) | − 2.80 (− 3.32, − 2.27) | / | − 0.72 (− 0.75, − 0.68) | − 0.99 (− 1.12, − 0.86) | 0.38 (0.29, 0.46) | − 2.69 (− 2.84, − 2.54) | − 1.18 (− 1.32, − 1.05) | |
| P value | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | / | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
| PR | R2 | 0.92 | 0.95 | 0.54 | 0.14 | 0.44 | / | 0.33 | 0.38 | 0.74 | / | 0.26 |
| Regression coefficient (95% CI) | − 0.69 (− 0.74, − 0.64) | − 0.66 (− 0.72, − 0.59) | − 0.27 (− 0.32, − 0.22) | 0.15 (− 0.01, 0.30) | 0.31 (0.12, 0.50) | / | 0.59 (0.33, 0.85) | − 0.26 (− 0.32, − 0.20) | − 0.25 (− 0.34, − 0.16) | / | − 0.22 (− 0.28, − 0.15) | |
| P value | < 0.001 | < 0.001 | < 0.001 | 0.06 | 0.003 | / | < 0.001 | < 0.001 | < 0.001 | / | < 0.001 | |
| TM | R2 | 0.77 | 0.69 | 0.94 | 0.97 | / | 1.00 | 0.64 | 0.77 | / | 0.80 | 0.14 |
| Regression coefficient (95% CI) | − 0.56 (− 0.66, − 0.46) | − 0.61 (− 0.87, − 0.36) | − 0.75 (− 0.80, − 0.70) | − 0.45 (− 0.49, − 0.42) | / | 0.48 (0.48, 0.48) | 0.43 (0.34, 0.52) | − 0.43 (− 0.49, − 0.36) | / | 0.63 (0.48, 0.77) | − 0.17 (− 0.27, − 0.07) | |
| P value | < 0.001 | < 0.001 | < 0.001 | < 0.001 | / | < 0.001 | < 0.001 | < 0.001 | / | < 0.001 | 0.001 | |
*Since the number of data points for the subgroups of age (40–45 year old), continent (Africa, South America), income (lower middle income, low income), and abstinence time (2–5 days, 2–6 days) were less than 10, they were not included in the subgroup analyses
/: No data