Table 2 Summary of significance test for debris-flow events in nine provinces from Dataset 1
From: The nocturnal occurrence of debris flows: evidence from western China
Province | Total event N | Nocturnal event X | Calculated frequency p | Standard error SE | 95% confidence interval | Expected frequency p0 | P-value |
|---|---|---|---|---|---|---|---|
Gansu | 8 | 8 | 100.0% | 0.0% | [68.4%, 100.0%] | 50.0% | 7.80 × 10−3 |
Guangxi | 6 | 5 | 83.3% | 15.0% | [47.8%, 99.1%] | 0.21 | |
Guizhou | 7 | 5 | 71.4% | 17.0% | [29.0%, 96.3%] | 0.45 | |
Shaanxi | 10 | 7 | 70.0% | 14.0% | [34.8%, 94.3%] | 0.34 | |
Sichuan | 194 | 153 | 78.9% | 2.9% | [72.4%, 84.4%] | 2.10 × 10−16 | |
Tibet | 8 | 5 | 62.5% | 17.0% | [24.5%, 91.5%] | 0.70 | |
Xinjiang | 7 | 5 | 71.4% | 17.0% | [29.0%, 96.3%] | 0.45 | |
Yunnan | 48 | 32 | 66.7% | 6.8% | [51.6%, 79.6%] | 0.03 | |
Chongqing | 7 | 4 | 57.1% | 18.7% | [18.4%, 90.1%] | 1.00 |
