Table 2.
Studies using distributed lag models and selection of lag and cumulative effects (N = 22)
| Author, year | Linearity | Statistical analysis | Immediate or cumulative effect | Lag time/Exposure prior to outcome | Temporal unit |
|---|---|---|---|---|---|
| Wilson et al., 2013 | Non-linear | Distributed lag non-linear model | Immediate & cumulative | 0, 1, 2, 3, 0–2 | Daily |
| Wang et al., 2014 | Non-linear | Distributed lag non-linear model | Immediate & cumulative | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 0–7 | Daily |
| Peng et al., 2017 | Non-linear | Distributed lag non-linear model | Cumulative | 0, 0–1, 0–2, 0–3, 0–4, 0–5, 0–6, 0–7, 0–14, 0–21 | Daily |
| Chan et al., 2018 | Non-linear | Distributed lag non-linear model | Cumulative | 0–2, 0–8 | Daily |
| Lee et al., 2018 | Non-linear | Distributed lag non-linear model | Cumulative | 0–7 | Daily |
| Sherbakov et al., 2018 | Non-linear | Distributed lag non-linear model | Cumulative | 0–3 | Daily |
| Wang et al., 2018 | Non-linear | Distributed lag non-linear model | Cumulative | 0, 0–1, 0–2, 0–3, 0–4, 0–5, 0–6 | Daily |
| Almendra et al., 2019 | Non-linear | Distributed lag non-linear model | Cumulative | 0, 0–1, 0–2, 0–3, 0–4, 0–5, 0–6, 0–7 | Daily |
| Gu et al., 2019 | Non-linear | Distributed lag non-linear model | Cumulative | 0–7, 0–14, 0–21 | Daily |
| Min et al., 2019 | Non-linear | Distributed lag non-linear model | Immediate & cumulative | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 0–1, 0–2, 0–3, 0–4, 0–5, 0–6, 0–7, 0–8, 0–9, 0–10, 0–11, 0–12, 0–13, 0–14, 0–15, 0–16, 0–17, 0–18, 0–19, 0–20, 0–21 | Daily |
| Pan et al., 2019 | Non-linear | Distributed lag non-linear model | Immediate | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 | Daily |
| Xu et al., 2019 | Non-linear | Distributed lag non-linear model | Immediate | 0, 1, 2 | Daily |
| Yi et al., 2019 | Non-linear | Distributed lag non-linear model | Immediate & cumulative | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0–1, 0–2, 0–3, 0–4, 0–5, 0–6, 0–7, 0–8, 0–9, 0–10, 0–11, 0–12, 0–1, 0–14 | Daily, 0–14 cumulative days |
| da Silva et al., 2020 | Non-linear | Distributed lag non-linear model | Cumulative | 0, 0–6, 0–7 | Daily |
| Liu et al., 2020 | Non-linear | Distributed lag non-linear model | Cumulative | 0, 1–5, 6–21, 0–21 | Daily |
| Niu et al., 2020 | Non-linear | Distributed lag non-linear model | Immediate & cumulative | 0, 1, 2, 3, 4, 5, 6, 7, 0–1, 0–2, 0–3, 0–4, 0–5, 0–6, 0–7 | Daily, 0–7 cumulative days |
| Zhang et al., 2020 | Non-linear | Distributed lag non-linear model | Immediate & cumulative | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 0–1, 0–3, 0–5, 0–7, 0–9 | Daily |
| Bundo et al., 2021 | Linear | Distributed lag linear model | Cumulative | 0–3, 0–7 | Daily |
| Eun-hye et al., 2021 | Non-linear | Distributed lag non-linear model | Cumulative | 0, 0–3, 0–7, 0–14, 0–21 | Daily |
| Jahan & Wraith, 2021 | Non-linear | Distributed lag non-linear model | Cumulative | 0–3, 0–7, 0–10, 0–15, 0–21, −0–28, 0–30 | Daily |
| Yoo et al., 2021 | Non-linear | Distributed lag non-linear model | Cumulative | 0–7 | Daily |