by user11992613
Last Updated September 12, 2019 04:19 AM

Given the following table/data with count data for 'local' across 6 quarters

```
Var1 Var2 Freq
1 2015 Q3 Local 26
2 2015 Q4 Local 81
3 2016 Q1 Local 81
4 2016 Q2 Local 62
5 2016 Q3 Local 112
6 2016 Q4 Local 96
```

**how do I run a quasi-poisson regression in R that shows me whether there is a trend in Freq across quarters?** I have tried the following, which does not work as I want as it gives me one slope for each quarter included rather than 1 1 slope across all quarters.

```
frequency_UPA1_LG_glm = glm(Freq ~ Var1, family = "quasipoisson", data = frequency_UPA1_LG)
summary(frequency_UPA1_LG_glm)
```

partial output obtained:

```
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) 3.258 NA NA NA
Var12015 Q4 1.136 NA NA NA
Var12016 Q1 1.136 NA NA NA
Var12016 Q2 0.869 NA NA NA
Var12016 Q3 1.460 NA NA NA
```

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