From: Accumulation of wear and tear in archival and library collections. Part II: an epidemiological study
Exposure variable | Outcome variable: failed sheets (%) | n | 95% CI for mean difference | t | df | p | ||
---|---|---|---|---|---|---|---|---|
M | SD | SE | ||||||
Reading room < 8× | 18.1 | 25.6 | 2.2 | 136 | − 25.1, − 9.9 | − 4.58 | 100 | < 0.001 |
Reading room ≥ 8× | 35.6 | 22.2 | 3.1 | 50 | ||||
Owner: private | 25.3 | 28.6 | 3.0 | 94 | − 2.3, 12.6 | − 1.37 | 176 | 0.173 |
Owner: government | 20.2 | 22.6 | 2.4 | 92 |